Simply Calculate The Difference!

QUICK START GUIDE

fx-115ES PLUS
2nd EDITION

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The following explains the meaning of each mode on the fx-115ES Plus 2nd Edition:

COMP MODE

To calculate and solve basic expressions, press to enter COMP mode.
To make any changes to the calculator settings, press(SETUP).
Inputting a Fraction & Converting to Decimal Form:

1. To solve , press
2. To view the solution as a decimal, press.

Note: press again to see the entire decimal answer. Pressing once more will display the fraction solution again.

To Find the Remainder of a Division Problem:

1. To find the remainder of 7 divided by 5, press
   

Absolute Value:

1. To find the absolute value of -4, press

Exponents:

1. To evaluate 3⁄4, press

Roots:

1. To calculate the square root of 25, press
   
2. To calculate the cube root of 64, press

Storing Variables:
To store a value for any variable, pres followed by a variable, A ­ F. In this example, we will store a value of 1 for the variable A.

1.  Press

Note: When you store the value for the variable, you do not need to press the key prior to pressing the variable key.

Calculating Expressions:

The key allows you to enter an expression with variables, assign values for each variable and then automatically calculate the expression, without having to store values for the variable first.

1. Enter the expression, 3A + B, by pressing
   
2.  Press
   
3. Enter 5 for A by pressing
   
4. Enter 10 for B by pressing
   
5. The values of A and B can be used to solve additional expressions, without using
   

Solving Equations (SOLVE): SOLVE uses Newton’s method to approximate the solution of equations. SOLVE can only be used in COMP mode.

Solve y = ax2 + b for x, when y = 0, a = 1, and b = -2.

1. Enter the equation by pressing
   
   
2. Press (SOLVE) to enter the SOLVE feature.
3. Enter the value for y by pressing
   
4. Enter the value for a by pressing
   
5. Enter the value of b by pressing
   
6. Enter an initial value for x, for this example, we will enter 1, by pressing
   
7. To exit SOLVE, press
   

STAT MODE

To start a statistical calculation, press to enter STAT mode and use the screen that appears to select the type of calculation you want to perform.

Note: When you want to change the calculation type after entering STAT mode, press(STAT/DIST)1(Type) to display the calculation type selection screen.

Input the following data and find the linear regression.
(170, 66) (173, 68) (179, 75)

Entering Data:

1. To enter the data points above, press
   
2. Enter the x-values first, pressing after each value.
   
3. Use the arrows to move to the top of the y-column and enter the y-values, pressing after each value.
   

Finding a Regression:

1. To find the regression equation, press to clear the screen.
   
2. Press to display the Statistics Menu.
   
3. Press 5 (Reg) to find the coefficients for the linear regression equation.
   
4.  Press 1 (A)to find the value of A.
   
5.  To find the value of B, repeat the process. Press
   
6. The values of the correlation coefficient (r), the estimated value of X, and the estimated value of Y can also be found.
   

EQN MODE

Equation Mode can be used to solve simultaneous linear equations with two or three unknowns, quadratic equations, or cubic equations. Pressto enters EQN mode and press the corresponding number for the desired equation type.

1.  Press 1 to select a simultaneous linear equation with two unknowns.
   
2. Enter the coefficients for each term in each equation by pressing
   
3. Pressto solves for the variables.
   
4. Press to see the solution for y.
   
5. To solve additional simultaneous equations with two unknowns, press

Example 2: Solve 2×2 ­ 3x ­ 6 = 0.

1. To choose a different type of equation to solve, press to return to the initial Equation screen.
   
2. Press 3 to select a quadratic equation.
   
3. Enter the coefficients of each term and the constant by pressing
   
4. Pressto solves for the roots and the minimum.
   
5. Press to see the additional information

TABLE MODE

TABLE generates a number table based on one or two functions, entered as f(x) and/or g(x). Press to enter TABLE mode.

Note: Be sure to input the x variable when generating a number table. All other variables will be handled as constants.

1. Enter the first function by pressing
   
2. Enter the second function by pressing
   
3. Enter the Start, End, and Step values by pressing
   

INEQ MODE

INEQ Mode allows you to solve a quadratic inequality or a cubic inequality. Press to enter INEQ Mode and select quadratic or cubic.

Solve x2 + 2x ­ 3 < 0:

1.  Press 1 to select a quadratic inequality.
   
2. Press 2 to select the less than inequality.
   
3. Enter the coefficients of each term and the constant by pressing 
   
4. Press to display the solution set.
   

VERIFY MODE

VERIFY Mode allows you to verify whether input equality or inequality is true or false. Press to enter VERIFY Mode.

Note: Pressing will bring up a menu of equality or inequality symbols to use.

Verify whether 4√9=12 is true or false:

1. Enter the equation by pressing 
   
2. Pressto sees if the statement is true or false.
   

Simply Calculate The Difference!

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fx-115ES PLUS 2nd Edition Quick Start Guide

CASIO G-Shock 5637 User Guide

Operation Guide 5637

Congratulations upon your selection of this CASIO watch.
To ensure that this watch provides you with the years of service for which it is designed, carefully read and follow the instructions in this manual, especially the information under “Operating Precautions” and “User Maintenance

About This Manual

• Button operations are indicated using the letters shown in the illustration
  
• Note that the product illustrations in this manual are intended for reference only, and so the actual product may appear somewhat different than depicted by an
• Depending on the model of your watch, display text appears either as dark figures on a light background, or light figures on a dark background. All sample displays in this manual are shown using dark figures on a light background.
  
• Note that the display type of your watch is fixed for that particular model, and cannot be changed.
• The appearance of display indicators (page E-55) will depend on the display type of your watch.

Things to check before using the watch

1. Check the Home City and the daylight saving time (DST) setting.
   Use the procedure under “To configure Home City settings” (page E-16) to configure your Home City and daylight saving time settings.

Important!

• Proper World Time Mode data depends on correct Home City, time, and date settings in the Timekeeping Make sure you configure these settings correctly.

Set the current time.

• See “Adjusting the Digital Time and Date Settings” (page E-19).

The watch is now ready for use.

Mode Reference Guide

The mode you should select depends on what you want to do

Selecting a Mode

• In the Timekeeping Mode, press D to enter the Stopwatch
• For more information about using the Stopwatch Mode, see “To enter the Stopwatch Mode” (page E-24).
  
• In any mode (except a setting mode), press Ⓒ to illuminate the display.
• Press Ⓒ to cycle between the modes as shown below
• To return to the Timekeeping Mode from any other mode, hold down Ⓒ for at least two seconds

General Functions (All Modes)

The functions and operations described in this section can be used in all modes.

Auto Return

If you do not perform any operation for about two or three minutes while configuring settings (setting flashing on the digital display) in any mode, the watch will exit the setting operation and return to normal display.

Scrolling

The B and D buttons are used on the setting mode to scroll through data on the display. In most cases, holding down these buttons during a scroll operation scrolls through the data at high speed

Moving the Hands Out of the Way for Better Viewing

You can use the procedure below to temporarily move the hour and minute hands out of the way to better view what is on the display.
This operation can be performed in any mode. In the case of a setting mode (setting flashing on the screen), the hands will move out of the way automatically, even if you do not perform the below operation

1. While holding down Ⓒ, press Ⓒ.

• This will cause the hour and minute hands to move to a location where they do not block your view of the digital Example: When the current time is 8:23
                 Flashes while the hands are moved out of the way.
  2. Holding down Ⓒ again as you press Ⓒ will cause the hands to return to their normal positions (normal timekeeping).

Note

• Watch button functions are the same regardless of whether the hands are moved out of the way or at their normal
• Changing to another mode will cause the hands to move back to their normal
• The hands also will move back to their normal positions automatically if no operation is performed for about one

Timekeeping

Use the Timekeeping Mode to set and view the current time and date

Configuring Home City Settings

There are two Home City settings: actually selecting the Home City, and selecting either standard time or daylight saving time (DST).

1. In the Timekeeping Mode, hold down A until the flashing SET Hold indicator disappears from the display and the currently selected city code flashes on the display.
   • This indicates the Home City setting mode
2. Use D (+) and B (–) to scroll through city codes until the one you want is
   • For details about city codes, see the “City Code Table” at the back of this
   •Holding down either button scrolls at high speed
   
3. After the setting is the way you want, press A to return to the Timekeeping Mode

Note

• You can check the city code and name (English) of your Home City by pressing A.
• After you specify a city code, the watch will use UTC* offsets in the World Time Mode to calculate the current time for other time zones based on the current time in your Home

Coordinated Universal Time, the world-wide scientific standard of timekeeping. The reference point for UTC is Greenwich, England

To change the Daylight Saving Time (summer time) setting

1. In the Timekeeping Mode, hold down A until the flashing SET Hold indicator disappears from the display and the currently selected city code flashes on the
2. Press Ⓒ to display the DST setting
3. Press D to toggle between Daylight Saving Time (ON) and Standard Time (OFF).
   • Note that you cannot switch between daylight saving time and standard time while UTC is selected as your Home
4. After the setting is the way you want, press A to return to the Timekeeping
   • The DST indicator appears to indicate that Daylight Saving Time is turned
     

Adjusting the Digital Time and Date Settings

1. Use the procedure below to adjust the digital time and date settings.
   In the Timekeeping Mode, hold down A until the flashing SET Hold indicator disappears from the display and the currently selected city code flashes on the displayTo configure the digital time and date settings
   
2. Press Ⓒ to move the flashing in the sequence shown below to select the other settings
   
3. When the timekeeping setting you want to change is flashing, perform the operation described.

Screen	To do this:	Do this:
	Toggle between 12-hour (12H) and 24-hour (24H)       timekeeping	Press D.
	Reset the seconds to 00	Press D.
	Change the hour or minute	Use D (+) and B (–) to change these      settings.  Holding down either button scrolls at high speed.
	Change the year
	Change the month or day

Note

• Resetting the seconds to 00 while the current count is in the range of 30 to 59 causes the minutes to be increased by
• The watch’s built-in full automatic calendar makes allowances for different month lengths and leap Once you set the date, there should be no reason to change it except after you have the watch’s battery replaced.
• The day of the week changes automatically when the date changes.

Using the Stopwatch

The stopwatch measures elapsed time, split times, and two finishes

• The measurement range of the stopwatch is 23 hours, 59 minutes, 59.99 seconds. Elapsed time returns to zero automatically and timing continues from there when the maximum limit is reached.
  

To enter the Stopwatch Mode

You can enter the Stopwatch Mode using any one of the methods below.

Entering Directly from the Timekeeping Mode
If the stopwatch was reset to all zeros the last time you used it, a new elapsed time operation will start as soon as you enter the Stopwatch Mode.
See page E-26 for information about measuring an elapsed time.

1. In the Timekeeping Mode, press D.
   This will result in one of the following, depending on the status of the stopwatch the last time you exited the Stopwatch Mode
   •  If reset (stopped at 0:00 00″00): Timing
   One-press timing start from the Timekeeping Mode (direct timing start from the Timekeeping Mode
   •  If an ongoing timing operation is paused: Timing remains
   •  If an ongoing timing operation is in progress*: Timing continues to be

* An ongoing stopwatch timing operation continues even if you navigate to another mode from the Stopwatch Mode

2. Now you can perform the same operations as those shown on page E-26.

Entering from Another Mode (including the Timekeeping Mode)

Press Ⓒ as many times as necessary to navigate to the Stopwatch Mode as shown on page E-11.

• To enter from the Timekeeping Mode using this method, press Ⓒ four
• This will display the stopwatch screen in the same status as it was the last time you exited the Stopwatch Mode. However, if you exited with a split time displayed, the split time operation will be released when you return

Note

• Once started, elapsed time measurement continues until you press D to stop it, even if you change to a different mode and even if the stopwatch reaches the elapsed time maximum

Using the Target Time Alarm
You can set a target time in the range of one minute to 24 hours, in units of one minute.
A beeper will sound for 10 seconds when the elapsed timing of the stopwatch reaches the target time

1. Reset the stopwatch to all
2. Hold down A until the flashing SET Hold indicator disappears from the display and the hour digit starts to Release A after the hour digit starts to flash.
3. Use D (+) and B (–) to change the hour
   • Holding down either button scrolls at high
   • For a target time of 24 hours, set 00 hours 00
4. Press Ⓒ to switch to the minutes
5. Use D (+) and B (–) to change the minutes
   • Holding down either button scrolls at high
6. Press Ⓒ to display the target time alarm on/off
   
7. Press D to toggle the target alarm between on (On displayed) and off (OFF displayed).
   • The indicator TGT will be displayed in the Stopwatch Mode while the target time is
   • After all the settings are the way you want, press A to exit the setting screen.

To use the target time alarm

1. Reset the stopwatch to all zeros and then press D. This will cause TGT to flash on the display.
2. Now you can perform the same operations as those in the steps on page E-26.
   

• You can get an idea of time elapsed until the target time from changes in the display.

1. From start up to half of target time

• • Screen: As shown in the figure, top left indicator that indicates minutes
  • TGT starts to
    

2 From target time half until target time is reached

• Screen: As shown in the figure, all of the part that indicates minutes
• TGT flashes at high speed starting from one minute before the target
  

3 Target time reached

• Beep for 10
• Screen: Changes as shown in the
• TGT becomes
  

4 After target time is expired

• Screen: The top left indicator that indicates minutes flashes (at slow speed).
• Elapsed time is measured, with TGT remaining
• Resetting the elapsed stopwatch time automatically causes TGT to re-appear. You can re-use the same target time, if you want

Note

• TGT flashes in the above operation even if the watch is in another
  To stop the alert beeper
  Pressing any button while the alert beeper is sounding will stop it.
• Pressing D or B operates the elapsed time operation on page E-26.

To perform stopwatch timing without using the Target Time Alarm
Use step 7 under “To set a target time” to disable the target time alarm

Countdown Timer

The countdown timer can be set within a range of
one minute to 60 minutes. An alarm sounds when the countdown reaches zero
To enter the Countdown Timer Mode
Use Ⓒ to select the Countdown Timer Mode as shown on page E-11.

• If a countdown timer operation is in progress, press D to pause it and then press B to reset the timer to its start time.
• If a countdown timer operation is paused, press B to reset the timer to its start

1. Hold down A until the flashing SET Hold indicator disappears from the display and the minutes digits start to Release A after the digits start to flash.
2. Use D (+) and B (–) to change the minutes
   • Holding down either button scrolls at high
3. After all the settings are the way you want, press A to exit the setting
          To configure the countdown timer
   

To perform a countdown timer operation

To stop the alarm
     Press any button

Checking the Current Time in a Different Time Zone

You can use the World Time Mode to view the current time in one of 31 time zones (48 cities) around the globe. The city that is currently selected in the World Time Mode is called the “World Time City”.

• The hour and minute hands indicate information for the currently selected Home City.
• When you enter the World Time Mode, the currently selected city code and city name (English) scroll once across the digital display. After that, the city code remains displayed.
• You can view the name (English) of your Home City by pressing A.
  

To enter the World Time Mode

Use Ⓒ to select the World Time Mode as shown on page E-11.

To view the time in another time zone

In the World Time Mode, press D to change the city code setting.

• Holding down D scrolls at high
• To display the UTC city code (differential 0), press B and D at the same

To specify standard time or daylight saving time (DST) for a city

1. In the World Time Mode, press D to display the city code (time zone) whose Standard Time/Daylight Saving Time setting you want to
2. Hold down A for at least two
   • This toggles the city code you selected in step 1 between Daylight Saving Time (DST indicator displayed) and standard time (DST indicator not displayed).
   • Note that you cannot switch between standard time/ daylight saving time (DST) while UTC is selected as the World Time
   • The standard time/daylight saving time (DST) setting affects only the currently displayed city. Other cities are not affected
     

In the World Time Mode, hold down B for at least three seconds
This will cause SWAP Hold to flash on the display, and then your Home City and World Time City will be swapped.
Example: To swap the Home City (TYO) and World Time City (NYC)

Using the Alarm

You can set five independent daily alarms. When a daily alarm is turned on, an alarm tone will sound for about 10 seconds each day when the time in the Timekeeping Mode reaches the preset alarm time. One of the alarms is a snooze alarm that repeats every five minutes, up to seven times.
You can also turn on an Hourly Time Signal, which will cause the watch to beep twice every hour on the hour

To enter the Alarm Mode

Use Ⓒ to select the Alarm Mode as shown on page E-11.

• The snooze alarm screen is indicated by SNZ, while the other alarm screens are numbered AL1 through AL4. The Hourly Time Signal screen is indicated by SIG.
• When you enter the Alarm Mode, the data you were viewing when you last exited the mode appears first
  
• If you do not perform any operation for about two or three minutes in the Alarm Mode, the watch will automatically return to the Timekeeping

1. In the Alarm Mode, use D to display the alarm whose settings you want to change.
   
2. Hold down A until the flashing SET Hold indicato
   disappears from the display and the alarm time hour digits start to flash. Release A after the digits start to flash

• ALM appears on the display, indicating that alarm setting is enabled
  

1. Press Ⓒ to move the flashing between the hour and the minute
   • The selected digits are those that are
2. Use D (+) and B (–) to change the hour and minute
   • Holding down either button scrolls at high
   • When setting the alarm time using the 12-hour format, take care to set the time correctly as m. (no indicator) or p.m. (P indicator).
3. Press A to exit the setting mode.

To test the alarm
In the Alarm Mode, hold down D to sound the alarm

To turn an alarm and the Hourly Time Signal on and off

In the Alarm Mode, press D to select an alarm or the Hourly Time Signal.

• When the alarm you want or the Hourly Time Signal is displayed, press B to toggle it between on
  (ON displayed) and off (OFF displayed).
• The alarm on indicator (when any alarm is on), snooze alarm indicator (when the snooze alarm is on), and the Hourly Time Signal on indicator (when the Hourly Time Signal is on) are shown on the display in all
• SNZ and ALM will be displayed while the snooze alarm is turned on
  

To stop the alarm

Press any button

Note

• In the case of the snooze alarm, the alarm sounds seven times at five-minute intervals (snooze operation).
• SNZ flashes on the display while a snooze operation is in
• Any one of the operations below will stop an ongoing snooze
  • Turning off the snooze alarm
  • Displaying the snooze alarm setting screen
  • Displaying the Timekeeping Mode setting screen
  • Changing the summer time setting of your Home City in the World Time Mode

Illumination

The display of the watch is illuminated for easy reading in the dark.

To turn on illumination

Press Ⓒ in any mode to illuminate the display.

• You can use the procedure below to select either 1.5 seconds or three seconds as the illumination duration

To change the illumination duration

1. In the Timekeeping Mode, hold down A until the flashing SET Hold indicator disappears from the display and the currently selected city code flashes on the
2. Press Ⓒ ten times to display the illumination duration setting
   • The current illumination duration setting (1 or 3) will be flashing in the
   • See the sequence in step 2 of the procedure under “To configure the digital time and date settings” (page E-19) for information about how to scroll through setting
3. Press D to toggle the illumination duration between three seconds (3 displayed) and 5 seconds (1 displayed).
4. After all the settings are the way you want, press A to exit the setting screen

Adjusting Hand Positions

The watch hands can go out of alignment with the time on the digital display if it is exposed to strong magnetism or impact. If this happens, you should adjust the hand positions.

Important!

• You do not need to perform the operation below as long as the analog hands indicate the same time as the digital

1. In the Timekeeping Mode, hold down A for at least five seconds until 0:00 starts to flash. Release A after 0:00
   This enters the hour and minute hand adjustment mode
   
2. If the hour and minute hands are not at 12 o’clock, use D (+) and B (–) to adjust them until they are
   Holding down either button moves the hands at high
3. Press A to return to the Timekeeping Mode. Check to make sure that the time indicated by the hands matches the time on the digital display. If the times don’t match, perform the correction procedure above again
   

Button Operation Tone

You can turn the button operation tone on or off as desired.

• Even if you turn off the button operation tone, the Target Time Alarm, alarms, the Hourly Time Signal, and other beepers all operate

To turn the button operation tone on and off

1. In the Timekeeping Mode, hold down A until the flashing SET Hold indicator disappears from the display and the currently selected city code flashes on the left side of the lower
2. Press Ⓒ nine times to display the button operation tone On/Off screen (page E-20). The screen will show either KEY or MUTE
   
   
3. Press D to toggle the setting between KEY (ON) and MUTE (OFF).
4. After all the settings are the way you want, press A to exit the setting screen

Troubleshooting

  Hand Movement and Indications

• The time indicated by the hands is different from the digital This could indicate that the watch has been exposed to magnetism or strong impact, which has caused problems with proper hand alignment. Adjust the watch’s hand home position alignment (page E-48).

Time Setting

• The current time setting is off by hours. Your Home City setting may be wrong (page E-16). Check your Home City setting and correct it, if necessary
• The current time setting is off by one hour. You may need to change your Home City’s standard time/daylight saving time (DST) setting. Use the procedure under “Adjusting the Digital Time and Date Settings” (page E-19) to change the standard time/daylight saving time (DST) setting

  World Time Mode

• The time for my World Time City is off in the World Time This could be due to incorrect switching between standard time and daylight saving time. See “To specify standard time or daylight saving time (DST) for a city” (page E-39) for more information.

Main Indicators

Graphic display in each mode occurs as described below.

Specifications

Accuracy at normal temperature: ±15 seconds a month
Digital Timekeeping: Hour, minutes, seconds, p.m. (P), month, day, day of the week
Time format: 12-hour and 24-hour
Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099 Other: Home City code (can be assigned one of 48 city codes);
Standard Time/Daylight Saving Time (summer time)
Analog Timekeeping: Hour, minutes (hand moves every 20 seconds)

Stopwatch:

Measuring unit: 1/100 second Measuring capacity: 23:59′ 59.99″
Measuring modes: Elapsed time, split time, two finishes, Direct timing start from the Timekeeping Mode, Target Time Alarm

Countdown Timer:

Measuring unit: 1/10 second Countdown range: 60 minutes
Countdown start time setting range: 1 to 60 minutes (1-minute increments)
World Time: 48 cities (31 time zones)
Other: Daylight Saving Time/Standard Time; Home City/World Time City switching
Alarms: 5 Daily alarms (with 1 snooze alarm); Hourly time signal
Illumination: LED (light-emitting diode); Selectable illumination duration (approximately 1.5 seconds or 3 seconds)
Other: Button operation tone on/off; Moving the Hands to View the Digital Display

Power Supply: One lithium battery (Type: CR2016)
Approximate battery operating time: 7 years under the following conditions:

• Alarm: 10 seconds/day
• 1 illumination operation (1.5 seconds) per day
  Frequent use of illumination runs down the battery.
  Specifications are subject to change without notice.

Operating Precautions

Water Resistance

• The information below applies to watches with WATER RESIST or WATER RESISTANT marked on the back cover

• Do not use your watch for scuba diving or other types of diving that requires air
• Watches that do not have WATER RESIST or WATER RESISTANT marked on the back cover are not protected against the effects of Avoid using such a watch under conditions where it will be exposed to large amounts of sweat or moisture, or to direct splashing with water.
• Even if a watch is water resistant, note the usage precautions described Such types of use reduce water resistance performance and can cause fogging of the glass.
  – Do not operate the crown or buttons while your watch is submersed in water or wet.
  – Avoid wearing your watch while in the bath.
  – Do not wear your watch while in a heated swimming pool, sauna, or any other high temperature/high humidity environment.
  – Do not wear your watch while washing your hands or face, while doing housework, or while performing any other task that involves soaps or detergents.
• After submersion in seawater, use plain water to rinse all salt and dirt from your
• To maintain water resistance, have the gaskets of your watch replaced periodically (about once every two or three years).
• A trained technician will inspect your watch for proper water resistance whenever you have its battery Battery replacement requires the use of special tools. Always request battery replacement from your original retailer or from an authorized CASIO service center.
• Some water-resistant watches come with fashionable leather Avoid swimming, washing, or any other activity that causes direct exposure of a leather band to water.
• The inside surface of the watch glass may fog when the watch is exposed to a sudden drop in temperature. No problem is indicated if the fogging clears up relatively Sudden and extreme temperature changes (such as coming into an air conditioned room in the summer and standing close to an air conditioner outlet, or leaving a heated room in the winter and allowing your watch to come into contact with snow) can cause it to take longer for glass fogging to clear up. If glass fogging does not clear up or if you notice moisture inside of the glass, immediately stop using your watch and take it to your original retailer or to an authorized CASIO service center.

Band

• Tightening the band too tightly can cause you to sweat and make it difficult for air to pass under the band, which can lead to skin irritation. Do not fasten the band too There should be enough room between the band and your wrist so you can insert your finger.
• Deterioration, rust, and other conditions can cause the band to break or come off of your watch, which in turn can cause band pins to fly out of position or to fall out. This creates the risk of your watch falling from your wrist and becoming lost, and also creates the risk of personal injury. Always take good care of your band and keep it
• Immediately stop using a band if you even notice any of the following: loss of band flexibility, band cracks, band discoloration, band looseness, band connecting pin flying or falling out, or any other abnormality. Take your watch to your original retailer or to a CASIO service center for inspection and repair (for which you will be charged) or to have the band replaced (for which you will be charged).

• Never leave your watch on the dashboard of a car, near a heater, or in any other location that is subject to very high Do not leave your watch where it will be exposed to very low temperatures. Temperature extremes can cause your watch to lose or gain time, to stop, or otherwise malfunction.
• Leaving your watch in an area hotter than +60°C (140°F) for long periods can lead to problems with its LCD. The LCD may become difficult to read at temperatures lower than 0°C (32°F) and greater than +40°C (104°F).

Impact

• Your watch is designed to withstand impact incurred during normal daily use and during light activity such as playing catch, tennis, Dropping your watch or otherwise subjecting it to strong impact, however, can lead to malfunction. Note that watches with shock-resistant designs (G-SHOCK, BABY-G, G-MS) can be worn while operating a chain saw or engaging in other activities that generate strong vibration, or while engaging in strenuous sports activities (motocross, etc.)

Magnetism

• The hands of analog and combination (analog-digital) watches are moved by a motor that uses magnetic force. When such a watch is close to a device (audio speakers, magnetic necklace, cell phone, etc.) that emits strong magnetism, the magnetism can cause timekeeping to slow down, speed up, or stop, resulting in the incorrect time being
• Very strong magnetism (from medical equipment, etc.) should be avoided because it can cause malfunction of your watch and damage to electronic components

Electrostatic Charge

• Exposure to very strong electrostatic charge can cause your watch to display the wrong time. Very strong electrostatic charge even can damage electronic
• Electrostatic charge can cause the display to go blank momentarily or cause a rainbow effect on the

• Do not allow your watch to come into contact with thinner, gasoline, solvents, oils, or fats, or with any cleaners, adhesives, paints, medicines, or cosmetics that contain such Doing so can cause discoloration of or damage to the resin case, resin band, leather, and other parts.

• If you do not plan to use your watch for a long time, thoroughly wipe it free of all dirt, sweat, and moisture, and store it in a cool, dry place

Resin Components

• Allowing your watch to remain in contact with other items or storing it together with other items for long periods while it is wet can cause color on resin components to transfer to the other items, or the color of the other items to transfer to the resin components of your watch. Be sure to dry off your watch thoroughly before storing it and make sure it is not in contact with other items.
• Leaving your watch where it is exposed to direct sunlight (ultraviolet rays) for long periods or failure to clean dirt from your watch for long periods can cause it to become
• Friction caused by certain conditions (strong external force, sustained rubbing, impact, ) can cause discoloration of painted components.
• If there are printed figures on the band, strong rubbing of the printed area can cause
• Leaving your watch wet for long periods can cause fluorescent color to Wipe the watch dry as soon as possible after it becomes wet.
• Semi-transparent resin parts can become discolored due to sweat and dirt, and if exposed to high temperatures and humidity for long
• Daily use and long-term storage of your watch can lead to deterioration, breaking, or bending of resin The extent of such damage depends on usage conditions and storage conditions.

• Allowing your watch to remain in contact with other items or storing it together with other items for long periods while it is wet can cause the color of the leather band to transfer to the other items or the color of the other items to transfer to the leather band. Be sure to dry off your watch thoroughly with a soft cloth before storing it and make sure it is not in contact with other items
• • Leaving a leather band where it is exposed to direct sunlight (ultraviolet rays) for long periods or failure to clean dirt from a leather band for long periods can cause it to become

  CAUTION: Exposing a leather band to rubbing or dirt can cause color transfer and discoloration

• Failure to clean dirt from metal components can lead to formation of rust, even if components are stainless steel or If metal components exposed to sweat or water, wipe thoroughly with a soft, absorbent cloth and then place the watch in a
• Use a soft toothbrush or similar tool to scrub the metal with a weak solution of water and a mild neutral detergent, or with soapy water. Next, rinse with water to remove all remaining detergent and then wipe dry with a soft absorbent
• When washing metal components, wrap the watch case with kitchen plastic wrap so it does not come into contact with the detergent or soap.

Bacteria and Odor Resistant Band

• The bacteria and odor resistant band protects against odor generated by the formation of bacteria from sweat, which ensures comfort and hygiene. In order to ensure maximum bacteria and odor resistance, keep the band Use an absorbent soft cloth to thoroughly wipe the band clean of dirt, sweat, and moisture. A bacteria and odor resistant band suppresses the formation of organisms and bacteria. It does not protect against rash due to allergic reaction, etc.

Liquid Crystal Display

• Display figures may be difficult to read when viewed from an angle

Note that CASIO COMPUTER CO., LTD. assumes no responsibility for any damage or loss suffered by you or any third party arising through the use of your watch or its malfunction

User Maintenance

Caring for Your Watch

Remember that you wear your watch next to your skin, just like a piece of clothing. To ensure your watch performs at the level for which it is designed, keep it clean by frequently wiping with a soft cloth to keep your watch and band free of dirt, sweat, water and other foreign matter.

• Whenever your watch is exposed to sea water or mud, rinse it off with clean fresh
  For a metal band or a resin band with metal parts, use a soft toothbrush or similar tool to scrub the band with a weak solution of water and a mild neutral detergent, or with soapy water. Next, rinse with water to remove all remaining detergent and then wipe dry with a soft absorbent cloth. When washing the band, wrap the watch case with kitchen plastic wrap so it does not come into contact with the detergent or soap
• For a resin band, wash with water and then wipe dry with a soft cloth. Note that sometimes a smudge like pattern may appear on the surface of a resin band. This will not have any effect on your skin or clothing. Wipe with a cloth to remove the smudge
• Clean water and sweat from a leather band by wiping with a soft cloth.
• Not operating a watch crown, buttons, or rotary bezel could lead to later problems with their operation. Periodically rotate the crown and rotary bezel, and press buttons to maintain proper

• Though the metal steel used for your watch is highly rust-resistant, rust can form if your watch is not cleaned after it becomes
  – Dirt on your watch can make it impossible for oxygen to come into contact with the metal, which can lead to breakdown of the oxidization layer on the metal surface and the formation of rust.
• Rust can cause sharp areas on metal components and can cause band pins to fly out of position or to fall out. If you ever notice any abnormality immediately stop using your watch and take it to your original retailer or to an authorized CASIO service
• Even if the surface of the metal appears clean, sweat and rust in crevasses can soil the sleeves of clothing, cause skin irritation, and even interfere with watch

Premature Wear

• Leaving sweat or water on a resin band or bezel, or storing your watch an area subject to high moisture can lead to premature wear, cuts, and

Skin Irritation

• Individuals with sensitive skin or in poor physical condition may experience skin irritation when wearing a watch. Such individuals should keep their leather band or resin band particularly clean. Should you ever experience a rash or other skin irritation, immediately remove your watch and contact a skin care professional

• Leave battery replacement up to your original retailer or authorized CASIO service
• Have the battery replaced only with the type specified in the User’s Use of a different battery type can cause malfunction.
• When replacing the battery, also request a check for proper water
• Ornamental resin components may become worn, cracked, or bent over time when subjected to normal daily Note that if cracking or any other
• abnormality indicating possible damage is noticed in a watch submitted for battery replacement, your watch will be returned with an explanation of the abnormality, without the requested servicing being performed.

• The battery that comes loaded in your watch when you purchase it is used for function and performance testing at the
• The test battery may go dead quicker than the normally rated battery life as noted in the User’s Guide. Note that you will be charged for replacement of this battery, even if replacement is required within your watch’s warranty

Low Battery Power

• Low battery power is indicated by large timekeeping error, by dim display contents, or by a blank
• Operation while battery power is low can result in malfunction. Replace the battery as soon as possible

City Code Table

• This table shows the city codes of this watch (As of January 2020)
• The rules governing global times (GMT differential and UTC offset) and summer time are determined by each individual

Casio G-Shock 5081

Getting Acquainted

Congratulations upon your selection of this CASIO watch. To get the most out of your purchase, be sure to read this manual carefully

About This Manual

• Depending on the model of your watch, display text appears either as dark figures on a light background or light figures on a dark background. All sample displays in this manual are shown using dark figures on a light background. Button operations are indicated using the letters shown in the illustration.
• Each section of this manual provides you with the information you need to perform operations in each mode. Further details and technical information can be found in the “Reference” section.

General Guide

• Press C to change from mode to mode.
• In any mode (except a setting mode), press B to illuminate the display.

Timekeeping
You can adjust the Home Time city date and time in the Timekeeping Mode. Pressing D in the Timekeeping Mode will toggle lower left display between the screens shown below.

To set the time and date

• In the Timekeeping Mode, hold down A for about three seconds until the city code flashes on the lower right display. This is the setting mode.
• Use D and B to select the city code you want.
  • Make sure you select your Home City code before changing any other setting.
  • For full information on city codes, see the “City Code Table”.
• Press C to change the flashing screen content in the sequence shown below to select the other setting.
• When the timekeeping setting you want to change is flashing, use D or B to change it as described below
• Press A to exit the setting mode.
  • The day of the week is displayed automatically in accordance with the date (year, month, and day) settings.

Daylight Saving Time (DST)
Daylight Saving Time (summer time) advances the time setting by one hour from Standard Time. Remember that not all countries or even local areas use Daylight Saving Time.

To change the Daylight Saving Time (summer time) setting

• In the Timekeeping Mode, hold down A for about three seconds until the city code flashes on the lower right display. This is the setting mode.
• Press C. This will display the DST setting screen.
• Use D to toggle the DST setting on and off.
  • The default DST setting is OFF ( ).
•  When the setting you want is selected, press A to exit the setting mode.
  • The DST indicator appears to indicate that Daylight Saving Time is turned on.

12-hour and 24-hour timekeeping

• With the 12-hour format, the PM indicator appears above the hour digits for times in the range of noon to 11:59 p.m. and no indicator appears for times in the range of midnight to 11:59 a.m.
• With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without the PM indicator.
• The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is applied in all other modes.

Stopwatch

• You can use the stopwatch to measure elapsed time, lap times and split times. If you specify a distance value, the stopwatch also will calculate and display speeds.
• The digital display range of the stopwatch is 99 hours, 59 minutes, 59.999 seconds. The stopwatch continues to run until you stop it. If it reaches the above limit, it will restart the time measurement from zero.
• The stopwatch operation continues even if you exit the Stopwatch Mode. If you exit the Stopwatch Mode while a stopwatch operation is in progress, the segments in the upper right dial will appear and disappear sequentially as stopwatch seconds are counted. This is to let you know that a stopwatch operation is in progress.
• All of the operations in this section are performed in the Stopwatch Mode, which you enter by pressing C.

Important!
Check to make sure that the speed hand is not moving before you perform any Stopwatch Mode button operation.

Specifying a Distance Value

You can use the procedure below to specify a distance value, if you want. If you specify a distance value, the watch will calculate and indicate speed for certain stopwatch operations.

•  The distance value represents kilometers, miles, or any other distance unit you want. Specifying a distance value of 10.0, for example, can mean 10.0 kilometers or 10.0 miles.
•  No speed calculation is performed when 0.0 is specified as the current distance value.
•  For lap time readings, you can specify either the lap distance (when all the laps are the same distance) or the total race distance.
•  For split time readings, you can specify the total race distance only. Though the watch will indicate a speed each time you take a split reading, they will be based on the total race distance, and so they will not indicate actual intermediate split speeds.

To specify a distance value

• In the Stopwatch Mode, make sure the stopwatch is stopped and reset to all zeros.
  • If you need to reset the stopwatch to all zeros, press A.
• Hold down A for about three seconds until the watch beeps, DIST ( ) appears in the lower right display, and the left digit of the current distance value setting flashes in the lower left display.
  • This is the distance value setting mode.
• Press C to move the flashing between the values on the left side and right side of the distance value digit decimal point.
• While either the left or right distance value is flashing, use D (+) and B (–) to change it.
  • You can specify a distance value in the range of 0.1 to 99.9.
• After specifying the distance value you want, press A to exit the setting mode.

How speed is indicated

• While an elapsed time measurement operation is being performed in the Stopwatch Mode, the watch will display a speed value, which is calculated based on the distance you specified and the elapsed time. The speed is indicated by the upper right dial, two indicators (1000 and MACH), and the speed hand.
• The upper right dial indicates the 100s digit value.
• 1000 appears when the speed exceeds 1,000.
• MACH appears when the speed exceeds 1,226.
• The speed hand indicates speed values less than 100.
• Only even-numbered values are indicated.

Example:

• At a speed of 1,740, the upper right dial indicates 1000 and MACH is displayed.
• The upper right dial indicates 700.
• The speed hand indicates 40.
  Speed can be indicated from 0 to 1998. OVER is indicated by the speed hand when the speed exceeds 1998.

Time Measurement

• You need to specify either lap time or split time measurement before you start a stopwatch operation.
• If you want to measure total elapsed time, select split time measurement.

To specify lap time or split time readings

• In the Stopwatch Mode, make sure the stopwatch is stopped and reset to all zeros.
  • Make sure that LAP (lap times) or SPL (split times) is shown in the lower right display.
  • If you need to reset the stopwatch to all zeros, press A.
• Press A to toggle between LAP (lap times) and SPL (split times) in the lower right display.

Elapsed Time Measurement
Use the following procedure to measure elapsed time, without taking lap time or split time readings.

To perform elapsed time measurement

• Select split time (SPL) measurement and then perform the following button operations.

D Start ➝ D Stop ➝ A Reset

• If you have a distance value specified for the current elapsed time measurement, the upper right dial and speed hand will indicate the overall speed when you press D to stop the elapsed time operation.
• After pressing D to stop an elapsed time operation, you could press D again to restart from the point where you left off.

Lap Time

• A lap time reading shows the time elapsed since the last lap time reading was taken.
• If you want the watch to calculate the speed of each lap (when all of the laps are the same distance), specify the lap distance for the distance setting.
• If you want the watch to calculate the speed of the entire race, specify the race distance for the distance setting. A speed will be indicated each time you take a lap reading, but these lap speeds will not indicate actual speed of the entire race.

To set up the stopwatch to take lap time readings

• In the Stopwatch Mode, make sure the stopwatch is stopped and reset to all zeros.
• If you need to reset the stopwatch to all zeros, press A.
• Make sure that LAP (lap times) is shown in the lower right display.
• If SPL (split times) is displayed, press A to toggle it to LAP.

To perform a lap time measurement

• Select lap time (LAP) measurement and then perform the following button operations.

D Start ➝ A Lap* ➝ A Lap* ➝
D Stop ➝ A Reset

• The lap time is released automatically in about 12 seconds.
• You can press A to take lap readings as many times as you like. The LAP indicator flashes while a lap reading is displayed.
• A lap number (#01 through #99) alternates with the lap hour value in the lower right display while a lap time reading is displayed. If you take more than 99 lap readings, the lap number will restart from #00 following lap #99.
• Pressing D to stop elapsed time measurement displays the time (and speed if a distance is specified) of the final lap.

Split Time

• A split time reading shows the time elapsed since the beginning of the current time measurement.
• If you want the watch to calculate the speed of the race, specify the race distance for the distance setting.
• For split time readings, you can specify the total race distance only. Though the watch will indicate a speed each time you take a split reading, they will be based on the total race distance, and so they will not indicate actual intermediate split speeds

To set up the stopwatch to take split time readings

• In the Stopwatch Mode, make sure the stopwatch is stopped and reset to all zeros.
• If you need to reset the stopwatch to all zeros, press A.
• Make sure that SPL (split times) is shown in the lower right display.
• If LAP (lap times) is displayed, press A to toggle it to SPL.

To perform a split time measurement

• Select split time (SPL) measurement and then perform the following button operations.

D Start ➝ A Split ➝ A Split Release* ➝ D Stop ➝ A Reset

• The split time is released automatically if you do not press A within about 12 seconds.
• You can press A to take split readings as many times as you like. The SPLIT indicator flashes while a lap reading is displayed.
• The stopwatch continues elapsed time measurement internally while a split time reading is displayed. Pressing A to release the split will switch the lower left display to the elapsed time measurement, or you also could press D to stop elapsed time measurement instead.
• Pressing D to stop elapsed time measurement displays the time (and speed if a distance is specified) of the final split (which is the overall elapsed time).

To measure times with the stopwatch

Countdown Timer

• You can set the countdown timer start time within a range of one minute to 24 hours. An alarm sounds when the countdown reaches zero.
• You also can select auto-repeat, which automatically restarts the countdown from the original value you set whenever zero is reached.
• All of the operations in this section are performed in the Countdown Timer Mode, which you enter by pressing C.

To use the countdown timer

• Press D while in the Countdown Timer Mode to start the countdown timer.
• When the end of the countdown is reached, the alarm will sound for 10 seconds or until you stop it by pressing any button.
• The countdown time is reset to its starting value automatically after the alarm stops if auto-repeat is turned off.
• When auto-repeat is turned on, the countdown will restart automatically without pausing when it reaches zero.
• The countdown timer measurement operation continues even if you exit the Countdown Timer Mode.
• Press D while a countdown operation is in progress to pause it.
• Press D again to resume the countdown.
• To stop a countdown timer operation completely, first pause it (by pressing D), and then press A. This returns the countdown time to its starting value.

To configure countdown start time and auto-repeat settings

• While the countdown start time is on the display in the Countdown Timer Mode, hold down A for about three seconds until the hour setting of the countdown start time starts to flash. This is the setting mode.
  • If the countdown start time is not displayed, use the procedure under “To use the countdown timer” to display it.
• Press C to move the flashing in the sequence shown below, and select the setting you want to change.
• Perform the following operations, depending on which setting currently is selected on the display.
  • While the start time setting is flashing, use D (+) and B (–) to change it.
  • While the auto-repeat on/off setting is flashing on the display, press D to toggle auto-repeat on and off
• Press A to exit the setting mode.
  • The auto-repeat onis displayed on the Countdown Timer Mode screen while this function is turned on

World Time

World Time digitally displays the current time in one of 48 cities (29 time zones) around the world. A simple operation swaps your Home City with the currently selected World Time City.

• The times kept in the World Time Mode are synchronized with the time being kept in the Timekeeping Mode. If you feel that there is an error in any World Time Mode time, check to make sure you have the correct city selected as your Home City. Also check to make sure that the current time as shown in the Timekeeping Mode is correct.
• Times in the World Time Mode are based on UTC offsets. See the “City Code Table” for information about the UTC offsets that are supported. All of the operations in this section are performed in the World Time Mode, which you enter by pressing C

To view the current time in another time zone

• In the World Time Mode, use D to scroll through available city codes (time zones).
• Holding down the button scrolls at high speed.
• The lower left display shows the current time in the World Time City.
• Between the noon and midnight in the World Time Mode, a PM indicator (PM) appears above the hour digits in the lower left display.
• When the city code (time zone) you want is selected, you can press A to display the date. After about one second, the watch will resume regular timekeeping for the currently selected city.

To toggle a city code time between Standard Time and Daylight Saving Time

• In the World Time Mode, press D to display the city code (time zone) whose Standard Time/Daylight Saving Time setting you want to change.
• Hold down A for about three seconds to toggle between Daylight Saving Time (DST indicator displayed) and Standard Time (DST indicator not displayed).
  • The DST indicator is shown in the lower left display while Daylight Saving Time is turned on.
  • You can turn on DST individually for each city code, except UTC.
  • Turning on DST for the city code that is currently selected as your Home City will turn on DST for normal time keeping.

Swapping your Home City and World Time City

You can use the procedure below to swap your Home City and World Time City. This changes your Home City to your World Time City, and your World Time City to your
Home City. This capability can come in handy when you frequently travel between two cities in different time zones.

To swap your Home City and World Time City

• In the World Time Mode, use D to select the World Time City you want.
• Hold down A and B until the watch beeps.
• This will make the World Time City you selected in step 1 your Home City, and cause the hour and minute hands to move to the current time in that city. At the same time, it will change the Home City you had selected prior to step 2 your World Time City, and cause the content of lower left display to change accordingly.
• After swapping the Home City and World Time City, the watch stays in the World Time Mode with the city that was selected as the Home City prior to step 2 now displayed as the World Time City.

Alarms

When an alarm is turned on, the alarm tone will sound when its alarm time is reached. One of the alarms is a snooze alarm, while the other four are daily alarms. You also can turn on an Hourly Time Signal that causes the watch to beep twice every hour on the hour.

• There are five alarm screens numbered AL1, AL2, AL3 and AL4 for the daily alarm, and a snooze alarm screen indicated by SNZ. The Hourly Time Signal screen is indicated by SIG.
• All of the operations in this section are performed in the Alarm Mode, which you enter by pressing C.
• In the Alarm Mode, use D to scroll through the alarm screens until the one whose time you want to set is displayed.
• To set a daily alarm, display alarm screen AL1, AL2, AL3 or AL4. To set the snooze alarm, display the SNZ screen.
• SIG is the hourly time signal setting.
• The snooze alarm repeats every five minutes.
• After you select an alarm, hold down A for about three seconds until the hour setting of the alarm time starts to flash. This is the setting mode.
• This operation turns on the alarm automatically.
• Press C to move the flashing between the hour and minute settings.
• While a setting is flashing, use D (+) and B (–) to change it.
• Press A to exit the setting mode

Alarm Operation

• The alarm tone sounds at the preset time for 10 seconds, regardless of the mode the watch is in. In the case of the snooze alarm, the alarm operation is performed a total of seven times, every five minutes, or until you turn the alarm off.
• Alarm and Hourly Time Signal operations are performed in accordance with the current time in your Home City, as kept in the Timekeeping Mode.
• To stop the alarm tone after it starts to sound, press any button.
• Performing any one of the following operations during a 5-minute interval between snooze alarms cancels the current snooze alarm operation.
• Displaying the Timekeeping Mode setting screen
• Displaying the SNZ setting screen

To turn an alarm on and off

• In the Alarm Mode, use D to select an alarm.
• Press A to toggle it on and off.
  • Turning on a alarm (AL1, AL2, AL3, AL4 or SNZ) displays the alarm on indicator on its Alarm Mode screen.
  • In all modes, the alarm on indicator is shown for any alarm that currently is turned on.
  • The alarm on indicator flashes while the alarm is sounding.
  • The snooze alarm indicator flashes while the snooze alarm is sounding and during the 5-minute intervals between alarms.

To turn the Hourly Time Signal on and off

• In the Alarm Mode, use D to select the Hourly Time Signal (SIG).
• Press A to toggle it on and off.
  •  The Hourly Time Signal on indicator is shown on the display in all modes while this function is turned on

Illumination

• An LED (light-emitting diode) illuminates the face of the watch for easy reading in the dark. The watch’s auto light switch turns on illumination automatically when you angle the watch towards your face.
• The auto light switch must be turned on (indicated by the auto light switch indicator) for it to operate.
• See “Illumination Precautions” for other important information about using illumination.

To illuminate the display manually

• In any mode, press B to turn on illumination.
• The above operation turns on illumination regardless of the current auto light switch setting.
• You can use the procedure below to select either 1.5 seconds or 3 seconds as the illumination duration. When you press B, the illumination will remain on for about 1.5 seconds or 3 seconds, depending on the current illumination duration setting.

To specify the illumination duration

•  In the Timekeeping Mode, hold down A until the display contents start to flash. This is the setting screen.
•  Press C nine times to display the current illumination duration LT1 (LT1) or LT3 (LT3).
•  Press D to toggle the setting between LT1(1.5 seconds) and LT3 (three seconds).
•  Press A to exit the setting screen.

About the Auto Light Switch
Turning on the auto light switch causes illumination to turn on, whenever you position your wrist as described below in any mode.Moving the watch to a position that is parallel to the ground and then tilting it towards you more than 40 degrees causes illumination to turn on.

• Wear the watch on the outside of your wrist

Warning!

• Always make sure you are in a safe place whenever you are reading the display of the watch using the auto light switch. Be especially careful when running or engaged in any other activity that can result in accident or injury. Also take care that sudden illumination by the auto light switch does not startle or distract others around you.
• When you are wearing the watch, make sure that its auto light switch is turned off before riding a bicycle or operating a motorcycle or any other motor vehicle. Sudden and unintended operation of the auto light switch can create a distraction, which can result in a traffic accident and serious personal injury. To turn the auto light switch on and off In the Timekeeping Mode, hold down B for about three seconds to toggle the auto light switch on (auto light switch indicator displayed) and off (auto light switch indicator not displayed).
• The auto light switch indicator remains in all modes while the auto light switch is turned on.
• In order to protect against running down the battery, the auto light switch will turn off automatically approximately six hours after you turn it on. Repeat the above procedure to turn the auto light switch back on if you want.

Hand Home Position Correction
The speed hand and hour and minute hands of the watch can be thrown off by exposure to strong magnetism or impact. The watch is designed to correct speed, hour and minute hand manually.

To adjust home positions

• In the Timekeeping Mode, hold down D for about three seconds until H-SET ( ) appears in the lower right display and Sub (Sub) appears in the lower left display.
• This is the home position adjustment mode.
• Check the position of the speed hand.
• The speed hand is in the correct home position if it is pointed at 50 (12 o’clock). If it isn’t, use D to move the hand clockwise until it is.
• After confirming that the speed hand is in its correct home position, press C.
• Check the positions of the hour and minute hands.
• The hands are in the correct home positions if they are pointed at 12 o’clock. If they aren’t, use D (clockwise) and B (counterclockwise) to adjust their positions
• When everything is the way you want, press A to return to regular timekeeping.
• This will cause the hour and minute hands to move to the current Timekeeping Mode time and the speed hand to move to the 0 position.
• Pressing C here will return to the setting at the beginning of step 2

Reference

This section contains more detailed and technical information about watch operation. It also contains important precautions and notes about the various features and functions of this watch.

Auto Return Features

• If you leave the watch with a flashing setting on the display for two or three minutes without performing any operation, the watch will exit the setting mode automatically.
• The watch will return to the Timekeeping Mode automatically if you do not performany operation for two or three minutes in the Alarm Mode.

High-Speed Movement
• The D and B buttons are used to change setting in various setting modes. In most cases, holding down these buttons will start high-speed movement.

Initial Screens
When you enter the Stopwatch Mode, World Time Mode or Alarm Mode, the data you were viewing when you last exited the mode will appear first.

Timekeeping

• Resetting the seconds to 00 while the current count is in the range of 30 to 59 causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are reset to 00 without changing the minutes.
• The year can be set in the range of 2000 to 2099.
• The watch’s built-in full automatic calendar makes allowances for different month lengths and leap years. Once you set the date, there should be no reason to change it except when battery has replaced.
• The current time for all city codes in the Timekeeping Mode and World Time Mode is calculated in accordance with the Coordinated Universal Time (UTC) for each city, based on your Home City time setting.

Illumination Precautions

• Illumination may be difficult to see when viewed under direct sunlight.
• Illumination turns off automatically whenever an alarm sounds.
• Illumination turns off automatically depends on the current illumination duration setting.
• Frequent use of illumination runs down the battery.

Auto light switch precautions

• Avoid wearing the watch on the inside of your wrist. Doing so causes the auto light switch to operate when it is not needed, which shortens battery life. If you want to wear the watch on the inside of your wrist, turn off the auto light switch feature.
• Illumination may not turn on if the face of the watch is more than 15 degrees above or below parallel. Make sure that the back of your hand is parallel to the ground.
  Illumination turns off in about 1.5 seconds or 3 seconds, even if you keep the watch pointed towards your face.
• Static electricity or magnetic force can interfere with proper operation of the auto light switch. If illumination does not turn on, try moving the watch back to the starting position (parallel with the ground) and then tilt it back toward you again. If this does not work, drop your arm all the way down so it hangs at your side, and then bring it back up again.
• Under certain conditions, illumination may not turn on until about one second after you turn the face of the watch towards you. This does not necessarily indicate malfunction of the auto light switch.
• You may notice a very faint clicking sound coming from the watch when it is shaken back and forth. This sound is caused by mechanical operation of the auto light switch, and does not indicate a problem with the watch.

Specifications

• Accuracy at normal temperature: ± 15 seconds a month
• Digital Timekeeping: Hour, minutes, seconds, p.m. (P), month, day, day of the week
• Time format: 12-hour and 24-hour
• Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099
• Other: Home City code (can be assigned one of 48 city codes); Standard Time /
  • Daylight Saving Time (summer time)
• Analog Timekeeping: Hour, minutes (hand moves every 20 seconds)
• Stopwatch:
  • Measuring unit: 1/1000 second
  • Measuring capacity: 99:59’59.999″
  • Measuring modes: Elapsed time, Lap time, Split time
• Other: Speed
• Countdown Timer:
  • Measuring unit: 1 second
  • Input range: 1 minute to 24 hours (1-minute increments)
• Other: Auto-repeat timing
  • World Time: 48 cities (29 time zones)
  • Other: Daylight Saving Time/Standard Time, Home City/World Time City Swapping
  • Alarms: Four daily alarms, one snooze alarm, Hourly Time Signal
  • Illumination: LED (light-emitting diode), Auto Light Switch; Selectable illumination duration
  • Battery: One lithium battery (Type: CR1220) Approximate Battery Life: 2 years on type CR1220 (ten seconds of alarm operation per day, one illumination operation (1.5 seconds) per day)

City Code Table

• Based on data as of June 2009.
• The rules governing global times (UTC offset and GMT differential) and summer time are determined by each individual country.

USER MANUAL

Casio CTK-1500/CTK-1550 Piano / Keyboard

USER’S GUIDE

Please keep all information for future reference.

Safety Precautions
Before trying to use the Digital Keyboard, be sure to read the separate “Safety Precautions”.

About Music Score data
You can use a computer to download music score data from the CASIO Website. For more information, visit the URL below.
http://world.casio.com/

NOTICE

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

FCC CAUTION

Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

Declaration of Conformity

Model Number: CTK-1500/CTK-1550
Trade Name: CASIO COMPUTER CO., LTD.
Responsible party: CASIO AMERICA, INC.
Address: 570 MT. PLEASANT AVENUE, DOVER, NEW JERSEY 07801 Telephone number: 973-361-5400 This device complies with Part 15 of the FCC Rules, Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and 2) this device must accept any interference received, including interference that may cause undesired operation.

Important!

Please note the following important information before using this product.

• Before using the optional AD-E95100L Adaptor to power the unit, be sure to check the AC Adaptor for any damage first. Carefully check the power cord for breakage, cuts, exposed wire and other serious damage. Never let children use an AC adaptor that is seriously damaged.
• Never attempt to recharge batteries.
• Do not use rechargeable batteries.
• Never mix old batteries with new ones.
• Use recommended batteries or equivalent types.
• Always make sure that positive (+) and negative (–) poles are facing correctly as indicated near the battery compartment.
• Replace batteries as soon as possible after any sign they are getting weak.
• Do not short-circuit the battery terminals.
• The product is not intended for children under 3 years.
• Use only CASIO AD-E95100L adaptor.
• The AC adaptor is not a toy.
• Be sure to disconnect the AC adaptor before cleaning the product.

Declaration of Conformity According to EU Directive

Manufacturer:
CASIO COMPUTER CO., LTD.
6-2, Hon-machi 1-chome, Shibuya-ku, Tokyo 151-8543, Japan
Responsible within the European Union:
Casio Europe GmbH
Casio-Platz 1, 22848 Norderstedt, Germany
www.casio-europe.com

• Any reproduction of the contents of this manual, either in part or its entirety, is prohibited. Except for your own, personal use, any other use of the contents of this manual without the consent of CASIO is prohibited under copyright laws.

• IN NO EVENT SHALL CASIO BE LIABLE FOR ANY DAMAGES WHATSOEVER (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF PROFITS, BUSINESS INTERRUPTION, LOSS OF INFORMATION) ARISING OUT OF THE USE OF OR INABILITY TO USE THIS MANUAL OR PRODUCT, EVEN IF CASIO HAS BEEN ADVISED OF THE

POSSIBILITY OF SUCH DAMAGES.

• The contents of this manual are subject to change without notice.
• The actual appearance of the product may be different from that shown in the illustrations in this User’s Guide.
• Company and product names used in this manual may be registered trademarks of others.

Included Accessories

• Music Stand
• Leaflets
• Safety Precautions
• Other (Warranty, etc.)

Items included as accessories are subject to change without notice.

Separately Available Accessories

• You can get information about accessories that are separately for this product from the CASIO catalog available from your retailer, and from the CASIO website at the following URL. http://world.casio.com/

General Guide

• Illustrations in this User’s Guide show the CTK-1500.

1. (Power) button ☞EN-8
2. VOLUME button ☞EN-8
3. SYNCHRO/FILL-IN, kPAUSE button ☞EN-12, 17
4. 4START/STOP, PLAY/STOP button ☞EN-12, 13, 15
5. CHORDS, ACCOMP, PART SELECT button ☞EN-13, 15
6. TONE button ☞EN-9, 13
7. RHYTHM button ☞EN-15
8. SONG BANK button ☞EN-12
9. Number buttons, [–]/[+] keys ☞EN-4
10. DANCE MUSIC button ☞EN-11
11. LESSON LITE button ☞EN-14
12. FUNCTION button ☞EN-4
13. TEMPO buttons ☞EN-11, 13
14. Speakers
15. Song Bank list
16. Rhythm list
17. Display
18. Tone list
19. Dance Music Track list
20. Dance Music tone

Back

21. DC 9.5V terminal ☞EN-7
22. PHONES/OUTPUT jack ☞EN-8, 17

Display

1. Tone, rhythm, song bank indicators
2. Number, setting name/status display
3. Indicators
4. Volume, Tempo, measure
5. N F (Auto Accompaniment Types) indicators*,
   Acc (Auto Accompaniment) indicator
6. Dance Music Mode indicator
7. Beat display
8. Chord name
9. Pattern phrase keyboard/chord keyboard
   10 Part, fingering display

N:Normal, F:Fill-in

Timeout

If you do not perform any operation for a while configuring settings, the display will return to the previous screen automatically.

Using the 10-key Pad (9)

Use the number buttons and the [–] and [+] keys to change displayed numbers and settings.

Number Buttons

Use the number buttons to enter numbers and values.

• Enter the same number of digits as the currently displayed value.

Example: To enter tone number 004, input 0 3 0 3 4.

• Negative values cannot be input using the number buttons. Use + and – instead.

[–] and [+] Keys

You can use the + and – keys to change the displayed number or value.

• Holding down either key scrolls the displayed setting.
• Pressing both keys at the same time will revert to the initial default setting or the recommended setting.

Using the FUNCTION Button (12)

Use this button to change the volume level and pitch, and to configure other settings.

1. Press 12 FUNCTION.
2. Next, press 12 FUNCTION the number of times required to select the setting you want to change. Each press of 12 FUNCTION cycles through the available parameters.

Note: You can also scroll back through settings by holding down 12 FUNCTION and pressing 12 TEMPO

3. When the parameter you want is displayed, use 9 (10-key) to change its setting.

Important !

• The tone and other parameters revert to their initial defaults whenever you turn on power. The main volume, and Tuning, LCD Contrast, and Auto Power Off settings are automatically saved and retained when power is turned off.
• You can use the [+] and [–] buttons to input a value to the right of a decimal point. To specify 442.2 Hz, for example, first use the number buttons to input 4 3 4 3 2. Next, press the [+] button twice.

Getting Ready to Play

Preparing the Music Stand

Power Supply

Either an AC adaptor or batteries can be used to power this Digital Keyboard. Normally, use of AC adaptor power is recommended.

• Depending on your geographical area, an AC adaptor may not be included. In this case, will need to purchase an AC adaptor from your retailer.

Using the AC Adaptor

Make sure that you use only the AC adaptor specified for this Digital Keyboard. Use of a different type of AC adaptor can cause malfunction.

Specified AC Adaptor: AD-E95100L (JEITA Standard plug)

IMPORTANT!

• Be sure to turn off Digital Keyboard power before connecting or disconnecting the AC adaptor.
• The AC adaptor will become warm to the touch after very long use. This is normal and does not indicate malfunction.
• To prevent breaking of the wire, take care to avoid putting any type of load on the power cord.

Never insert metal, pencils, or any other objects into the product’s 9.5V DC terminal. Doing so creates the risk of accident.

Playing the Digital Keyboard

Turning on Power and Playing

1. Press 1 (Power).
   This turns on power.
   • To turn off the Digital Keyboard, hold down the 1(Power) button until the Digital Keyboard’s display goes blank.
2. Try playing something on the keyboard. You could use 2 VOLUME to adjust the volume setting.
   • This causes the volume indicator, which shows the current volume level, to appear on the display.

IMPORTANT!

Turning off power causes tone, rhythm, and other settings (except for main volume, the Tuning, LCD Contrast, and Auto Power Off settings) to return to their initial defaults.

Playing the Demo Songs

Following playback of the dance music demo (000), the built-in songs will playback sequentially from 001 to 100. You can switch to a different song while playback is in progress.

1. Press 4START/STOP, PLAY/STOP and 5 CHORDS, ACCOMP, PART SELECT at the same time.
   This will start playback of the demo songs. Demo playback continues until you stop it.
   • Demo songs always start from song number 000(dance music demo song).
   • See page A-4 for a complete list of available songs.
2. To change to another song while demo playback is in progress, use 9 (10-key) [–] and [+] keys to enter the song number you want (page EN-4).
   This will cause demo playback to jump to the song whose number you entered.
   • You cannot use 9 (10-key) number buttons to select a song.
3. To stop demo playback, press 4START/STOP,PLAY/STOP.
   Demo playback continues until you stop it by pressing 4 START/STOP, PLAY/STOP.

Using Headphones

Using headphones cuts off output from the built-in speakers, which means you can practice playing even late at night without disturbing others.

• Be sure to turn down the volume level before connecting headphones.

NOTE

• Headphones do not come with the Digital Keyboard.
• Use commercially available headphones. See page EN-1 for information about options.

IMPORTANT!

• Do not listen to very high volume output over headphones for long period. Doing so creates the risk of hearing damage.
• If the plug of the headphones you are using does not match the 22 PHONES / OUTPUT jack, use the applicable commercially available adaptor plug.
• If you are using headphones that require an adaptor plug, make sure you do not leave the adaptor plugged in when removing the headphones.

MA2009-EA
© 2020 CASIO COMPUTER CO., LTD.

Operation Guide 5416
Congratulations upon your selection of this CASIO watch.
To ensure that this watch provides you with the years of service for which it is designed, carefully read and follow the instructions in this manual, especially the information under “Operating Precautions” and “User Maintenance”.

About This Manual

• Depending on the model of your watch, display text appears either as dark figures on a light background, or light figures on a dark background. All sample displays in this manual are shown using dark figures on a light background.
• Button operations are indicated using the letters shown in the illustration.
• Note that the product illustrations in this manual are intended for reference only, and so the actual product may appear somewhat different than depicted by an illustration.

Things to check before using the watch

1. Set the current time. x See “Adjusting the Date Setting” (page E-11) and “Adjusting the Digital Time Setting” (page E-13).
The watch is now ready for use.

Mode Reference Guide

The mode you should select depends on what you want to do.

Selecting a Mode

• Press © to cycle between the modes as shown below. Press Q to illuminate the display.
• In any mode (except when a setting mode. with flashing digits is on the display).

General Functions (All Modes)
The functions and operations described in this section can be used in all of the modes.
Auto Return Features
If you leave a setting mode with flashing digits on the display for two or three minutes without performing any operation, the watch exits the setting mode automatically.
Scrolling
The © button is used on the setting mode to scroll through data on the display. In most cases, holding down this button during a scroll operation scrolls through the data at high speed.

Adjusting the Date Setting

Use the procedure below to adjust the date setting.
Note

• You can specify a date in the range of January 1, 2000, to December 31, 2099.
• The watch’s built-in full automatic calendar makes allowances for different month lengths and leaps years. Once you set the date, there should be no reason to change it except after you have the watch’s battery replaced.
• The day of the week changes automatically when the date changes.

To configure the date setting

1. In the Calendar Mode, hold down B for at least two seconds until the year starts to flash. This is the setting mode.
2. Press B to move the flashing in the sequence shown below to select the other settings.
   
3. When the date set you want to change is flashing, use ©to change it.
4. Press B to exit the setting mode.

Adjusting the Digital Time Setting

Use the procedure below to adjust the digital time setting.

To configure the digital time setting

1. In the Timekeeping Mode, hold down B for at least two seconds until the second starts to flash. This is the setting mode.
2. Press B to move the flashing in the sequence shown below to select the other settings.
   
3. When the timekeeping setting you want to change is flashing, use © to change it as described below.
   

   Screen	To do this:
   	Reset the second to 00
   	Change the hour or minute
   	Toggle between 12-hour (12H) and 24-hour (24H) timekeeping

4. Press B to exit the setting mode.

Note

• While 12-hour format is selected for timekeeping, a P indicator will appear for
  times from noon to 11:59 p.m. No indicator appears for times from midnight to 11:59 a.m. With the 24-hour format, time is displayed from 0:00 to 23:59, without any P indicator.

Using the Alarm

When an alarm is turned on, the alarm tone will sound when its alarm time is reached.

To enter the Alarm Mode
Use © to select the Alarm Mode as shown on page E-9.
To set an alarm time Hour

1. In the Alarm Mode, hold down B for at least two seconds until the hour starts to flash. This is the setting mode.
2. Press B to move the flashing between the hour and minute settings.
3. While a setting is flashing, use © to change it. x When setting the alarm time using the 12-hour format, take care to set the time correctly as a.m. (no indicator) or p.m. (P indicator).
4. Press B to exit the setting mode.
   

To test the alarm
In any mode, hold down © to sound the alarm.
To turn an alarm on and off
In the Alarm Mode, each press of B toggles between on and off.

To stop the alarm
Press any button.

Using the Stopwatch

The stopwatch measures elapsed time.

To enter the Stopwatch Mode Use © to select the Stopwatch Mode as shown on page E-9.

To perform an elapsed time operation

Note

• The Stopwatch Mode can indicate elapsed time up to 23 hours, 59 minutes, 59 seconds.
• After the elapsed time reaches one hour, the display units change to hours, minutes, and seconds, and time is measured in one-second increments.

Dual Time Mode

You can use the Dual Time Mode to set a second time that is different from the Timekeeping Mode time.
To enter the Dual Time Mode
Use © to select the Dual Time Mode as shown on page E-9.
To set the Dual Time 

1. In the Dual Time Mode, hold down B for at least two seconds until the hour starts to flash. This is the setting mode.
2. Press B to move the flashing between the hour and minute settings.
3. While a setting is flashing, use © to change it. x While the 12-hour format is selected for digital timekeeping, a P (PM) indicator will appear for times from noon to 11:59 p.m.
4. Press B to exit the setting mode. x In the Dual Time Mode, the second’s count is synchronized with the second’s count of the digital timekeeping.
   

Adjusting the Analog Hand Setting

Use the following procedure to adjust the analog hands so their settings match the digital time.
To adjust the analog time

1. In any mode, press A to advance the analog time setting by 20 seconds.
   • Holding down A advances the analog time setting at high speed.
   

Illumination

The face of the watch is illuminated for easy reading in the dark.
To turn on illumination
In any mode (except when a setting mode, with flashing digits, is on the display), press L to illuminate the display.

Illumination Precautions

• Illumination may be hard to see when viewed under direct sunlight.
• Illumination turns off automatically whenever an alarm sounds.
• Frequent use of illumination runs down the battery.
• The watch will emit an audible sound whenever the display is illuminated. This is caused by a transistor that vibrates when the EL panel lights up. It does not indicate the malfunction of the watch.

Specifications

Accuracy at normal temperature: ±15 seconds a month Calendar: Month, day, day of the week
Calendar System: Full Auto-calendar pre-programmed from the year 2000 to 2099
Digital Timekeeping: Hour, minute, second, p.m. (P) Time format: 12-hour and 24-hour
Analog Timekeeping: Hour, minute (hand moves every 20 seconds)
Alarm: Setting units: Hour, minute Beeper: 20 seconds
Stopwatch:
Measuring unit: 1/100 second (1 second after 1 hour)
Measuring capacity: 23:59’59”
Measuring mode: Elapsed time
Dual Time: Hour, minute, second
Illumination: EL (electro-luminescent) backlight

Battery:
One lithium battery (Type: CR2016) Approximately 7 years on type CR2016 (assuming alarm operation 20 seconds per day and one illumination operation 2 seconds per day) Frequent use of illumination runs down the battery.
Specifications are subject to change without notice.

Operating Precautions

Water Resistance

• The information below applies to watches with WATER RESIST or WATER RESISTANT marked on the back cover.

• Do not use your watch for scuba diving or other types of diving that requires air tanks.
• Watches that do not have WATER RESIST or WATER RESISTANT marked on the back cover are not protected against the effects of sweat. Avoid using such a watch under conditions where it will be exposed to large amounts of sweat or moisture, or to direct splashing with water.
• Even if a watch is water-resistant, note the usage precautions described below. Such types of use reduce water resistance performance and can cause fogging of the glass.
  – Do not operate the crown or buttons while your watch is submerged in water or wet.
  – Avoid wearing your watch while in the bath.
  – Do not wear your watch while in a heated swimming pool, sauna, or any other high temperature/high humidity environment.
  – Do not wear your watch while washing your hands or face, while doing housework, or while performing any other task that involves soaps or detergents.
• After submersion in seawater, use plain water to rinse all salt and dirt from your watch.
• To maintain water resistance, have the gaskets of your watch replaced periodically (about once every two or three years).
• A trained technician will inspect your watch for proper water resistance whenever you have its battery replaced. Battery replacement requires the use of special tools. Always request battery replacement from your original retailer or from an authorized CASIO service center.
• Some water-resistant watches come with fashionable leather bands. Avoid swimming, washing, or any other activity that causes direct exposure of a leather band to water.
• The inside surface of the watch glass may fog when the watch is exposed to a sudden drop in temperature. No problem is indicated if the fogging clears up relatively quickly. Sudden and extreme temperature changes (such as coming into an air-conditioned room in the summer and standing close to an air conditioner outlet, or leaving a heated room in the winter and allowing your watch to come into contact with snow) can cause it to take longer for glass fogging to clear up. If glass fogging does not clear up or if you notice moisture inside of the glass, immediately stop using your watch and take it to your original retailer or to an authorized CASIO service center.
• Your water-resistant watch has been tested in accordance with International Organization for Standardization regulations.

Band

• Tightening the band too tightly can cause you to sweat and make it difficult for air
  to pass under the band, which can lead to skin irritation. Do not fasten the band too tightly. There should be enough room between the band and your wrist so you can insert your finger.
• Deterioration, rust, and other conditions can cause the band to break or come off of your watch, which in turn can cause band pins to fly out of position or to fall out. This creates the risk of your watch falling from your wrist and becoming lost and also creates the risk of personal injury. Always take good care of your band and keep it clean.
• Immediately stop using a band if you even notice any of the following: loss of band flexibility, band cracks, band discoloration, band looseness, band connecting pin flying or falling out, or any other abnormality. Take your watch to your original retailer or to a CASIO service center for inspection and repair (for which you will be charged) or to have the band replaced (for which you will be charged).

Temperature

• Never leave your watch on the dashboard of a car, near a heater, or in any other location that is subject to very high temperatures. Do not leave your watch where it will be exposed to very low temperatures. Temperature extremes can cause your watch to lose or gain time, to stop, or otherwise malfunction.
• Leaving your watch in an area hotter than +60°C (140°F) for long periods can lead to problems with its LCD. The LCD may become difficult to read at temperatures lower than 0°C (32°F) and greater than +40°C (104°F).

Impact

• Your watch is designed to withstand impact incurred during normal daily use and
  during light activity such as playing catch, tennis, etc. Dropping your watch or otherwise subjecting it to strong impact, however, can lead to malfunction. Note that watches with shock-resistant designs (G-SHOCK, BABY-G, G-MS) can be worn while operating a chain saw or engaging in other activities that generate strong vibration, or while engaging in strenuous sports activities (motocross, etc.)

Magnetism

• The hands of analog and combination (analog-digital) watches are moved by a motor that uses magnetic force. When such a watch is close to a device (audio speakers, magnetic necklace, cell phone, etc.) that emits strong magnetism, the magnetism can cause timekeeping to slow down, speed up, or stop, resulting in the incorrect time being displayed.
• Very strong magnetism (from medical equipment, etc.) should be avoided because it can cause malfunction of your watch and damage to electronic components.

Electrostatic Charge

• Exposure to a very strong electrostatic charge can cause your watch to display at the wrong time. A very strong electrostatic charge even can damage electronic components.
• Electrostatic charge can cause the display to go blank momentarily or cause a rainbow effect on the display.

Chemicals

• Do not allow your watch to come into contact with thinner, gasoline, solvents, oils, or fats, or with any cleaners, adhesives, paints, medicines, or cosmetics that contain such ingredients. Doing so can cause discoloration of or damage to the resin case, resin band, leather, and other parts.

Storage

• If you do not plan to use your watch for a long time, thoroughly wipe it free of all dirt, sweat, and moisture, and store it in a cool, dry place.

Resin Components

• Allowing your watch to remain in contact with other items or storing it together with other items for long periods while it is wet can cause the color on resin components to transfer to the other items, or the color of the other items to transfer to the resin components of your watch. Be sure to dry off your watch thoroughly before storing it and make sure it is not in contact with other items.
• Leaving your watch where it is exposed to direct sunlight (ultraviolet rays) for long periods or failure to clean dirt from your watch for long periods can cause it to become discolored.
• Friction caused by certain conditions (strong external force, sustained rubbing, impact, etc.) can cause discoloration of painted components.
• If there are printed figures on the band, strong rubbing of the printed area can cause discoloration.
• Leaving your watch wet for long periods can cause the fluorescent color to fade. Wipe the watch dry as soon as possible after it becomes wet.
• Semi-transparent resin parts can become discolored due to sweat and dirt, and if exposed to high temperatures and humidity for long periods.
• Daily use and long-term storage of your watch can lead to deterioration, breaking, or bending of resin components. The extent of such damage depends on usage conditions and storage conditions.

Leather Band

• Allowing your watch to remain in contact with other items or storing it together with other items for long periods while it is wet can cause the color of the leather band to transfer to the other items or the color of the other items to transfer to the leather band. Be sure to dry off your watch thoroughly with a soft cloth before storing it and make sure it is not in contact with other items.
• Leaving a leather band where it is exposed to direct sunlight (ultraviolet rays) for long periods or failure to clean dirt from a leather band for long periods can cause it to become discolored.
  CAUTION: Exposing a leather band to rubbing or dirt can cause color transfer and discoloration.

Metal Components

• Failure to clean dirt from metal components can lead to the formation of rust, even if components are stainless steel or plated. If metal components are exposed to sweat or water, wipe thoroughly with a soft, absorbent cloth and then place the watch in a well-ventilated location to dry.
• Use a soft toothbrush or similar tool to scrub the metal with a weak solution of water and a mild neutral detergent, or with soapy water. Next, rinse with water to remove all remaining detergent and then wipe dry with a soft absorbent cloth. When washing metal components, wrap the watch case with kitchen plastic wrap so it does not come into contact with the detergent or soap.

Bacteria and Odor Resistant Band

• The bacteria and odor resistant band protects against odor generated by the formation of bacteria from sweat, which ensures comfort and hygiene. In order to ensure maximum bacteria and odor resistance, keep the band clean. Use an absorbent soft cloth to thoroughly wipe the band clean of dirt, sweat, and moisture. A bacteria and odor-resistant band suppress the formation of organisms and bacteria. It does not protect against rash due to allergic reactions, etc.

Liquid Crystal Display

• Display figures may be difficult to read when viewed from an angle.

Note that CASIO COMPUTER CO., LTD. assumes no responsibility for any damage or loss suffered by you or any third party arising through the use of your watch or its malfunction.

User Maintenance

Caring for Your Watch
Remember that you wear your watch next to your skin, just like a piece of clothing. To ensure your watch performs at the level for which it is designed, keep it clean by frequently wiping it with a soft cloth to keep your watch and band free of dirt, sweat, water, and other foreign matter.

• Whenever your watch is exposed to seawater or mud, rinse it off with clean fresh water.
• For a metal band or a resin band with metal parts, use a soft toothbrush or similar tool to scrub the band with a weak solution of water and a mild neutral detergent, or with soapy water. Next, rinse with water to remove all remaining detergent and then wipe dry with a soft absorbent cloth. When washing the band, wrap the watch case with kitchen plastic wrap so it does not come into contact with the detergent or soap. x For a resin band, wash with water and then wipe dry with a soft cloth. Note that sometimes a smudge-like pattern may appear on the surface of a resin band. This will not have any effect on your skin or clothing. Wipe with a cloth to remove the smudge pattern.
• Clean water and sweat from a leather band by wiping with a soft cloth.
• Not operating a watch crown, buttons, or rotary bezel could lead to later problems with their operation. Periodically rotate the crown and rotary bezel, and press buttons to maintain proper operation.

Dangers of Poor Watch Care Rust

• Though the metal steel used for your watch is highly rust-resistant, rust can form if your watch is not cleaned after it becomes dirty.
  – Dirt on your watch can make it impossible for oxygen to come into contact with the metal, which can lead to the breakdown of the oxidization layer on the metal surface and the formation of rust.
• Rust can cause sharp areas on metal components and can cause band pins to fly out of position or to fall out. If you ever notice any abnormality immediately stop using your watch and take it to your original retailer or to an authorized CASIO service center.
• Even if the surface of the metal appears clean, sweat and rust in crevasses can soil the sleeves of clothing, cause skin irritation, and even interfere with watch performance.

Premature Wear

• Leaving sweat or water on a resin band or bezel, or storing your watch in an area subject to high moisture can lead to premature wear, cuts, and breaks.

Skin Irritation

• Individuals with sensitive skin or in poor physical condition may experience skin irritation when wearing a watch. Such individuals should keep their leather band or resin band particularly clean. Should you ever experience a rash or other skin irritation, immediately remove your watch and contact a skincare professional.

Battery Replacement

• Leave battery replacement up to your original retailer or authorized CASIO service center.
• Have the battery replaced only with the type specified in the User’s Guide. The use of a different battery type can cause malfunction.
• When replacing the battery, also request a check for proper water resistance.
• Ornamental resin components may become worn, cracked, or bent over time when subjected to normal daily use. Note that if cracking or any other abnormality indicating possible damage is noticed in a watch submitted for battery replacement, your watch will be returned with an explanation of the abnormality, without the requested servicing being performed.

Initial Battery

• The battery that comes loaded in your watch when you purchase it is used for function and performance testing at the factory.
• The test battery may go dead quicker than the normally rated battery life as noted in the User’s Guide. Note that you will be charged for the replacement of this battery, even if replacement is required within your watch’s warranty period.

Low Battery Power

• Low battery power is indicated by large timekeeping error, by dim display contents, or by a blank display.
• The operation, while battery power is low, can result in malfunction. Replace the battery as soon as possible.

CASIO COMPUTER CO., LTD.
6-2, Hon-machi 1- chome
Shibuya-ku, Tokyo 151-8543, Japan

CASIO QW-3212 G-Shock Watch

About This Manual

• Depending on the model of your watch, display text appears either as dark figures on a light background or light figures on a dark background. All sample displays in this manual are shown using dark figures on a light background.
• Button operations are indicated using the letters shown in the illustration.
• Each section of this manual provides you with the information you need to perform operations in each mode. Further details and technical information can be bfound in the “Reference” section.

General Guide

• Press C to change from mode to mode.
• In any mode (except when a setting screen is on the display), press B to illuminate the display for about one second.

Timekeeping

Use the Timekeeping Mode to set and view the current time and date.
• Each press of D in the Timekeeping Mode will toggle between the two screens shown below.

To set the time and date

1. In the Timekeeping Mode, hold down A until the seconds start to flash, which indicates the setting screen.
2. Press C to move the flashing in the sequence shown below to select other settings.
3. When the setting you want to change is flashing, use D and B to change it as described below.
   

   Screen	To do this:	Do this:
   	Reset the seconds to	Press D.
   	Toggle between Daylight Saving Time (      ) and Standard Time (          )	Press D.
   	Change the city code	Use D (east) and B (west).
   	Change the hour or minutes	Use D (+) and B (–).
   	Toggle between 12-hour (12H) and 24-hour (24H) timekeeping	Press D.
   	Change the year, month, or day	Use D (+) and B (–).

   • See “Daylight Saving Time (DST)” for details about the DST setting.
   • With the 12-hour format, the P (PM) indicator appears to the left of the hour digits for times in the range of noon to 11:59 p.m. and no indicator appears to the left of the hour digits for times in the range of midnight to 11:59 a.m.
   • With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without any indicator.
   • The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is applied in all other modes.
4. Press A to exit the setting screen.
   • Resetting the seconds to while the current count is in the range of 30 to 59 causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are reset to without changing the minutes.
   • The year can be set in the range of 2000 to 2099.
   • The watch’s built-in full automatic calendar makes allowances for different month lengths and leap years. Once you set the date, there should be no reason to change it except after you have the watch’s battery replaced.
   • The day of the week is displayed automatically in accordance with the date (year, month, and day) settings.

Daylight Saving Time (DST)
Daylight Saving Time (summer time) advances the time setting by one hour from Standard Time. Remember that not all countries or even local areas use Daylight Saving Time.

To toggle the Timekeeping Mode time between DST and Standard Time

1. In the Timekeeping Mode, hold down A until the seconds start to flash, which indicates the setting screen.
2. Press C to display the DST setting screen.
3. Press D to toggle between Daylight Saving Time ( ) and Standard Time ( ).
4. Press A to exit the setting screen.
   • The DST indicator is displayed on the Timekeeping Mode screen while Daylight Saving Time is turned on.

World Time

World Time shows the current time in 48 cities (29 time zones) around the world.

• All of the operations in this section are performed in the World Time Mode, which you enter by pressing C. To view the time for another city code In the World Time Mode, press D to scroll eastwardly through city codes.
• For full information about city codes, see the “City Code Table”.
• If the current time shown for a city is wrong, check your Timekeeping Mode time and Home City code settings and make the necessary changes.

To toggle a city code time between Standard Time and Daylight Saving Time

1. In the World Time Mode, use D to display the city code (time zone) whose Standard Time/Daylight Saving Time setting you want to change.
2. Hold down A for about one second to toggle between Daylight Saving Time (DST indicator displayed) and Standard Time (DST indicator not displayed).
   • The DST indicator is on the display whenever you display a city code for which Daylight Saving Time is turned on.
   • Note that the DST/Standard Time setting affects only the currently displayed city code. Other city codes are not affected.
   • Note that you cannot switch between Standard Time and Daylight Saving Time while UTC is selected as the city code.

Alarms

You can set five independent Daily Alarms. When an alarm is turned on, the alarm tone sounds when the alarm time is reached. One of the alarms is a snooze alarm, while the other four are one-time alarms. You can turn on an Hourly Time Signal that causes the watch to beep twice every hour on the hour.

• There are five alarm screens numbered AL1 through AL4 for the one-time alarm, and a snooze alarm screen indicated by SNZ. The Hourly Time Signal screen is indicated by SIG.
• All of the operations in this section are performed in the Alarm Mode, which you enter by pressing C.

To set an alarm time

1. In the Alarm Mode, use D to scroll through the alarm screens until the one whose time you want to set is displayed.
2. After you select an alarm, hold down A until the hour setting of the alarm time starts to flash, which indicates the setting screen.
   • This operation turns on the alarm automatically.
3. Press C to move the flashing between the hour and minute settings.
4. While a setting is flashing, use D (+) and B (–) to change it.
   • • When setting the alarm time using the 12-hour format, take care to set the time correctly as a.m. (no indicator) or p.m. (P indicator).
5. Press A to exit the setting screen.

Alarm Operation

The alarm tone sounds at the preset time for 20 seconds, regardless of the mode the watch is in. In the case of the snooze alarm, the alarm operation is performed a total of seven times, every five minutes, until you turn the alarm off.

• Alarm and Hourly Time Signal operations are performed in accordance with the Timekeeping Mode time.
• To stop the alarm tone after it starts to sound, press any button.
• Performing any one of the following operations during a 5-minute interval between snooze alarms cancels the current snooze alarm operation. Displaying the Timekeeping Mode setting screen Displaying the SNZ setting screen

To test the alarm
In the Alarm Mode, hold down D to sound the alarm.

To turn an alarm on and off

1. In the Alarm Mode, use D to select an alarm.
2. Press A to toggle it on (on) and off (– –).
   • Turning on an alarm (AL1 through SNZ) displays the alarm on indicator on its Alarm Mode screen.
   • In all modes, the alarm on indicator is shown for any alarm that currently is turned on.
   • The alarm on indicator flashes while the alarm is sounding.
   • The snooze alarm indicator flashes while the snooze alarm is sounding and during the 5-minute intervals between alarms.

About the Alarm indicators

• The alarm on indicator is displayed in all modes when any alarm (AL1 to AL4 or SNZ) is turned on.
• When you display an alarm screen (AL1 to AL4 or SNZ) in the Alarm Mode, the on/ off indicator shows the on/off status of that alarm.

To turn the Hourly Time Signal on and off

1. In the Alarm Mode, use D to select the Hourly Time Signal (SIG).
2. Press A to toggle it on (on displayed) and off (– – displayed).
   • Turning on the Hourly Time Signal displays the Hourly Time Signal indicator on its Alarm Mode screen.
   • While the Hourly Time Signal is turned on, the Hourly Time Signal on indicator is shown on the display in all modes besides the Alarm Mode.

Stopwatch

The stopwatch lets you measure elapsed time, split times, and two finishes.

• The display range of the stopwatch is 23 hours, 59 minutes, 59.99 seconds.
• The stopwatch continues to run, restarting from zero after it reaches its limit, until you stop it.
• The stopwatch measurement operation continues even if you exit the Stopwatch Mode.
• Exiting the Stopwatch Mode while a split time is frozen on the display clears the split time and returns to elapsed time measurement.
• All of the operations in this section are performed in the Stopwatch Mode, which you enter by pressing C.

To measure times with the stopwatch

Countdown Timer

You can set the countdown timer within a range of one minute to 24 hours. An alarm sounds when the countdown reaches zero.
• All of the operations is this section are performed in the Countdown Timer Mode, which you can enter using C.

To use the countdown timer

Press D while in the Countdown Timer Mode to start the countdown timer.

• When the end of the countdown is reached, the alarm sounds for 10 seconds or until you stop it by pressing any button. The countdown returns to its start time automatically after the alarm stops.
• The countdown timer measurement operation continues even if you exit the Countdown Timer Mode.
• Press D while a countdown operation is in progress to pause it. Press D again to resume the countdown.
• To stop a countdown operation completely, first pause it (by pressing D), and then press A. This returns the countdown time to its starting value.

To set up the countdown timer

1. While the countdown start time is on the display in the Countdown Timer Mode, hold down A until the hour setting of the countdown start time starts to flash, which indicates the setting screen.
   • If the countdown start time is not displayed, use the procedure under “To use the countdown timer” to display it.
2. Press C to move the flashing between the hour and minute settings.
3. While a setting is flashing, use D(+) and B(–) to change it.
   • To specify a countdown start time of 24 hours, set 0:00.
4. Press A to exit the setting screen.

Illumination

This watch has an EL (electro-luminescent) panel that causes the entire display to glow for easy reading in the dark.

• See “Illumination Precautions” for more important information.

To illuminate the display
In any mode (except when a setting screen is on the display), press B to turn on illumination for about one second.

Button Operation Tone

The button operation tone will sound any time you press one of the watch’s buttons. You can turn the button operation tone on or off as desired.

• The daily alarm and countdown alarm tones continue to sound even if you turn off the button operation tone.

To turn the button operation tone on and off

In any mode (except when a setting screen is on the display), hold down C to toggle the button operation tone on (mute indicator not displayed) and off (mute indicator displayed).

• Holding down C to turn the button operation tone on or off also causes the watch’s current mode to change.
• The mute indicator is displayed in all modes when the button operation tone is turned off.

Reference
This section contains more detailed and technical information about watch operation. It also contains important precautions and notes about the various features and functions of this watch.

Auto Return Features

• If you leave the watch in the Alarm Mode for two or three minutes without performing any operation, it changes to the Timekeeping Mode automatically.
• If you leave a screen with flashing digits or a cursor on the display for two or three minutes without performing any operation, the watch saves any settings you have made up to that point and exits the setting screen automatically.

Scrolling

The B and D buttons are used in various modes and setting screens to scroll through data on the display. In most cases, holding down these buttons scrolls at high speed.

Initial Screens

When you enter the World Time or Alarm Mode, the data you were viewing when you last exited the mode appears first.

World Time

The seconds count of the World Time is synchronized with the seconds count of the

Timekeeping Mode.

All World Time Mode times are calculated from the current Home City time in the

Timekeeping Mode using UTC time offset values.

• The UTC offset is a value that indicates the time difference between a reference point in Greenwich, England and the time zone where a city is located.
• The letters “UTC” is the abbreviation for “Coordinated Universal Time”, which is the world-wide scientific standard of timekeeping. It is based upon carefully maintained atomic (cesium) clocks that keep time accurately to within microseconds. Leap seconds are added or subtracted as necessary to keep UTC in sync with the Earth’s rotation.

Illumination Precautions

• The electro-luminescent panel that provides illumination loses power after very long use.
• Illumination may be hard to see when viewed under direct sunlight.
• The watch may emit an audible sound whenever the display is illuminated. This is due to vibration of the EL panel used for illumination, and does not indicate malfunction.
• Illumination turns off automatically whenever an alarm sounds.
• Frequent use of illumination runs down the battery.

Specifications

Accuracy at normal temperature: ±30 seconds a month

Timekeeping: Hour, minutes, seconds, p.m. (P), day, day of the week
Time format: 12-hour and 24-hour
Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099
Other: Home City code (can be assigned one of 48 city codes); Daylight Saving
Time (summer time)/Standard Time
World Time: 48 cities (29 time zones)
Other: Daylight Saving Time/Standard Time
Alarms: 5 alarms (four one-time alarms; one snooze alarm); Hourly Time Signal

Stopwatch

• Measuring unit: 1/100 second
• Measuring capacity: 23:59’59.99”
• Measuring modes: Elapsed time, split time, two finishes

Countdown Timer

• Measuring unit: 1 second
• Input range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
• Illumination: EL Backlight (electro-luminescent panel)
• Other: Button operation tone on/off
• Battery: One lithium battery (Type: CR1616)
  Approximately 3 years on type CR1616 (1.5 seconds of light operation and 20 seconds of beeper operation per day)

City Code Table

• Based on data as of June 2009.
• The rules governing global times (UTC offset and GMT differential) and summer time are determined by each individual country.

QUICK START GUIDE

fx-300ES PLUS
2nd EDITION

www.casioeducation.com

The following explains the meaning of each mode on the fx-300ES Plus 2nd Edition:

To calculate and solve basic expressions, press to enter COMP mode.

To make any changes to the calculator settings, press (SETUP).

COMP MODE

Inputting a Fraction & Converting to Decimal Form:

1.  To solve7/8+2/3/11, press
   
2.  To view the solution as a decimal, press

Note: press again to see the entire decimal answer. Pressing once more will display the fraction solution again.

To Find the Remainder of a Division Problem:

1. To find the remainder of 7 divided by 5, press
   

Absolute Value:

1. To find the absolute value of -4, press

Exponents:

1. To evaluate 34, press

Roots:

1. To calculate the square root of 25, press
   
2.  To calculate the cube root of 64, press
   

Storing Variables:

To store a value for any variable, press followed by a variable, A ­ F. In this example, we will store a value of 1 for the variable A.

1.  Press

To start a statistical calculation, press to enter STAT mode and use the screen that appears to select the type of calculation you want to perform.

Note: When you want to change the calculation type after entering STAT mode, press (STAT/DIST)1(Type) to display the calculation type selection screen.

Enter the data points and find the linear regression formula.

(2, 5) (3, 8) (7, 20)

Entering Data:

1. From the initial Stat screen, press 2 (A+BX) for linear regression.
   
2. Enter the x-values into the table by pressing
   
3.  Use the arrow keys to move to the top of the y-column and enter the y-values by pressing
   

STAT MODE

Finding a Regression:

1. To find the regression equation, press to clear the screen.
   
2. Press(STAT) to display the Statistics Menu.
   
3. Press 5 (Reg) to find the coefficients for the linear regression equation.
   
4. Press 1 (A) to find the value of A.
   
5. To find the value of B, repeat the process. Press
   
6. The values of the correlation coefficient (r), the estimated value of X, and the estimated value of Y can also be found.

TABLE MODE

TABLE generates a number table based on one or two functions, entered as f(x) and/or g(x). Press to enter TABLE mode.

Note: Be sure to input the x variable when generating a number table. All other variables will be handled as constants.

1. Enter the function (f)x = 2x + 1 by pressing
   
2. Press to store that function. Another function can be entered to compare the two functions. Pressto moves to the next screen and only has one function entered.
   
3. Set a starting x-value for the table. The default value is 1. To change the value, enter the new value and press. To keep the existing value, press.
   
4.  Next, set an ending x-value for the table. The default value is 5. To change the value, enter the new value and press. To keep the existing value, press.
   
5.  Set a step value for the table. The default value is 1. To change the value, enter the new value and press. To keep the existing value, press.
   
6. Use the and arrows to scroll through the entire table.
   Simply Calculate The Difference!

   See the complete line of Casio calculators
   www.casioeducation.com

    

Casio G-Shock GA-100 Smart watch

Operation Guide

Getting Acquainted
Congratulations upon your selection of this CASIO watch. To get the most out of your purchase, be sure to read this manual carefully.

About This Manual

• Depending on the model of your watch, display text appears either as dark figures on a light background or light figures on a dark background. All sample displays in this manual are shown using dark figures on a light background.
  General Guide
• Press C to change from mode to mode.
• In any mode (except a setting mode), press B to illuminate the display.

General Guide

• Press C to change from mode to mode.
• In any mode (except a setting mode), press B to illuminate the display.

You can adjust the Home Time city date and time in the Timekeeping Mode.

• Pressing D in the Timekeeping Mode will toggle lower left display between the screens shown below.

To set the time and date

1. In the Timekeeping Mode, hold down A for about three seconds until the city code flashes on the lower right display. This is the setting mode.
2. Use D and B to select the city code you want.
   • Make sure you select your Home City code before changing any other setting.
   • For full information on city codes, see the “City Code Table”.
3. Press C to change the flashing screen content in the sequence shown below to select the other setting.
4. When the timekeeping setting you want to change is flashing, use D or B to change it as described below.
5. Press A to exit the setting mode.
   • The day of the week is displayed automatically in accordance with the date (year, month, and day) settings.
   • Button operations are indicated using the letters shown in the illustration.
   • Each section of this manual provides you with the information you need to perform operations in each mode. Further details and technical information can be found in the “Reference” section.

Daylight Saving Time (DST)
Daylight Saving Time (summer time) advances the time setting by one hour from Standard Time. Remember that not all countries or even local areas use Daylight Saving Time.

To change the Daylight Saving Time (summer time) setting

1. In the Timekeeping Mode, hold down A for about three seconds until the city code flashes on the lower right display. This is the setting mode.
2. Press C. This will display the DST setting screen.
3. Use D to toggle the DST setting on and off.
   • The default DST setting is OFF
4. When the setting you want is selected, press A to exit the setting mode.
   • The DST indicator appears to indicate that Daylight Saving Time is turned on.

12-hour and 24-hour timekeeping

• With the 12-hour format, the PM indicator appears above the hour digits for times in the range of noon to 11:59 p.m. and no indicator appears for times in the range of midnight to 11:59 a.m.
• With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without the PM indicator.
• The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is applied in all other modes.

Stopwatch

You can use the stopwatch to measure elapsed time, lap times and split times. If you specify a distance value, the stopwatch also will calculate and display speeds.

• The digital display range of the stopwatch is 99 hours, 59 minutes, 59.999 seconds. The stopwatch continues to run until you stop it. If it reaches the above limit, it will restart the time measurement from zero.
• The stopwatch operation continues even if you exit the Stopwatch Mode. If you exit the Stopwatch Mode while a stopwatch operation is in progress, the segments in the upper right dial will appear and disappear sequentially as stopwatch seconds are counted. This is to let you know that a stopwatch operation is in progress.
• All of the operations in this section are performed in the Stopwatch Mode, which you enter by pressing C.

Important!
Check to make sure that the speed hand is not moving before you perform any Stopwatch Mode button operation.

Specifying a Distance Value
You can use the procedure below to specify a distance value, if you want. If you specify a distance value, the watch will calculate and indicate speed for certain stopwatch operations.

• The distance value represents kilometers, miles, or any other distance unit you want. Specifying a distance value of 10.0, for example, can mean 10.0 kilometers or 10.0 miles.
• No speed calculation is performed when 0.0 is specified as the current distance value.
• For lap time readings, you can specify either the lap distance (when all the laps are the same distance) or the total race distance.
• For split time readings, you can specify the total race distance only. Though the watch will indicate a speed each time you take a split reading, they will be based on the total race distance, and so they will not indicate actual intermediate split speeds.

To specify a distance value

1. In the Stopwatch Mode, make sure the stopwatch is stopped and reset to all zeros.
   • If you need to reset the stopwatch to all zeros, press A.
2. Hold down A for about three seconds until the watch beeps, DIST appears in the lower right display, and the left digit of the current distance value setting flashes in the lower left display.
3. This is the distance value setting mode.
4. Press C to move the flashing between the values on the left side and right side of the distance value digit decimal point.
5. While either the left or right distance value is flashing, use D (+) and B (–) to change it.
   • You can specify a distance value in the range of 0.1 to 99.9.
6. After specifying the distance value you want, press A to exit the setting mode.

How speed is indicated

• While an elapsed time measurement operation is being performed in the Stopwatch Mode, the watch will display a speed value, which is calculated based on the distance you specified and the elapsed time. The speed is indicated by the upper right dial, two indicators (1000 and MACH), and the speed hand.
• The upper right dial indicates the 100s digit value.
• 1000 appears when the speed exceeds 1,000.
• MACH appears when the speed exceeds 1,226.
• The speed hand indicates speed values less than 100. Only even-numbered values are indicated.
  Example:
  At a speed of 1,740, the upper right dial indicates 1000 and MACH is displayed.
  The upper right dial indicates 700.
  The speed hand indicates 40.
• Speed can be indicated from 0 to 1998. OVER is indicated by the speed hand when the speed exceeds 1998.

Time Measurement
You need to specify either lap time or split time measurement before you start a stopwatch operation.

• If you want to measure total elapsed time, select split time measurement.

To specify lap time or split time readings

1. In the Stopwatch Mode, make sure the stopwatch is stopped and reset to all zeros.
   • Make sure that LAP (lap times) or SPL (split times) is shown in the lower right display.
   • If you need to reset the stopwatch to all zeros, press A.
2. Press A to toggle between LAP (lap times) and SPL (split times) in the lower right display.

Elapsed Time Measurement
Use the following procedure to measure elapsed time, without taking lap time or split time readings.

To perform elapsed time measurement
Select split time (SPL) measurement and then perform the following button operations.
D Start ➝ D Stop ➝ A Reset

• If you have a distance value specified for the current elapsed time measurement, the upper right dial and speed hand will indicate the overall speed when you press D to stop the elapsed time operation.
• After pressing D to stop an elapsed time operation, you could press D again to restart from the point where you left off.

Lap Time 
A lap time reading shows the time elapsed since the last lap time reading was taken.

• If you want the watch to calculate the speed of each lap (when all of the laps are the same distance), specify the lap distance for the distance setting.
• If you want the watch to calculate the speed of the entire race, specify the race distance for the distance setting. A speed will be indicated each time you take a lap reading, but these lap speeds will not indicate actual speed of the entire race.

To set up the stopwatch to take lap time readings

1. In the Stopwatch Mode, make sure the stopwatch is stopped and reset to all zeros.
   • If you need to reset the stopwatch to all zeros, press A.
2. Make sure that LAP (lap times) is shown in the lower right display.
   • If SPL (split times) is displayed, press A to toggle it to LAP.

To perform a lap time measurement

Select lap time (LAP) measurement and then perform the following button operations.
D Start ➝ A Lap* ➝ A Lap* ➝
D Stop ➝ A Reset

* The lap time is released automatically in about 12 seconds.

• You can press A to take lap readings as many times as you like. The LAP indicator flashes while a lap reading is displayed.
• A lap number (#01 through #99) alternates with the lap hour value in the lower right display while a lap time reading is displayed. If you take more than 99 lap readings, the lap number will restart from #00 following lap #99.
• Pressing D to stop elapsed time measurement displays the time (and speed if a distance is specified) of the final lap.

Split Time
A split time reading shows the time elapsed since the beginning of the current time measurement.

• If you want the watch to calculate the speed of the race, specify the race distance for the distance setting.
• For split time readings, you can specify the total race distance only. Though the watch will indicate a speed each time you take a split reading, they will be based on the total race distance, and so they will not indicate actual intermediate split speeds.

To set up the stopwatch to take split time readings

1. In the Stopwatch Mode, make sure the stopwatch is stopped and reset to all zeros.
   • If you need to reset the stopwatch to all zeros, press A.
2. Make sure that SPL (split times) is shown in the lower right display.
   • If LAP (lap times) is displayed, press A to toggle it to SPL.

To perform a split time measurement

Select split time (SPL) measurement and then perform the following button operations.
D Start ➝ A Split ➝ A Split Release* ➝D Stop ➝ A Reset
The split time is released automatically if you do not press A within about 12 seconds.

• You can press A to take split readings as many times as you like. The SPLIT indicator flashes while a lap reading is displayed.
• The stopwatch continues elapsed time measurement internally while a split time reading is displayed. Pressing A to release the split will switch the lower left display to the elapsed time measurement, or you also could press D to stop elapsed time measurement instead.
• Pressing D to stop elapsed time measurement displays the time (and speed if a distance is specified) of the final split (which is the overall elapsed time).

To measure times with the stopwatch

Countdown Timer
You can set the countdown timer start time within a range of one minute to 24 hours. An alarm sounds when the countdown reaches zero.

• You also can select auto-repeat, which automatically restarts the countdown from the original value you set whenever zero is reached.
• All of the operations in this section are performed in the Countdown Timer Mode, which you enter by pressing C.

To use the countdown timer
Press D while in the Countdown Timer Mode to start the countdown timer.

• When the end of the countdown is reached, the alarm will sound for 10 seconds or until you stop it by pressing any button.
• The countdown time is reset to its starting value automatically after the alarm stops if auto-repeat is turned off.
• When auto-repeat is turned on, the countdown will restart automatically without pausing when it reaches zero.
• The countdown timer measurement operation continues even if you exit the Countdown Timer Mode.
• Press D while a countdown operation is in progress to pause it.
  Press D again to resume the countdown.
• To stop a countdown timer operation completely, first pause it (by pressing D), and then press A. This returns the countdown time to its starting value.

To configure countdown start time and auto-repeat settings

1. While the countdown start time is on the display in the Countdown Timer Mode, hold down A for about three seconds until the hour setting of the countdown start time starts to flash. This is the setting mode.
   • If the countdown start time is not displayed, use the procedure under “To use the countdown timer” to display it.
2. Press C to move the flashing in the sequence shown below, and select the setting you want to change.
3. Perform the following operations, depending on which setting currently is selected on the display.
   • While the start time setting is flashing, use D (+) and B (–) to change it.
   • While the auto-repeat on/off setting is flashing on the display, press D to toggle auto-repeat on ( ) and off ( ).
4. Press A to exit the setting mode.
   • The auto-repeat on is displayed on the Countdown Timer Mode screen while this function is turned on.

World Time

World Time digitally displays the current time in one of 48 cities (29 time zones) around the world. A simple operation swaps your Home City with the currently selected World Time City.

• The times kept in the World Time Mode are synchronized with the time being kept in the Timekeeping Mode. If you feel that there is an error in any World Time Mode time, check to make sure you have the correct city selected as your Home City. Also check to make sure that the current time as shown in the Timekeeping Mode is correct.
• Times in the World Time Mode are based on UTC offsets. See the “City Code Table” for information about the UTC offsets that are supported.
• All of the operations in this section are performed in the World Time Mode, which you enter by pressing C.

To view the current time in another time zone
In the World Time Mode, use D to scroll through available city codes (time zones). Holding down the button scrolls at high speed.

• The lower left display shows the current time in the World Time City.
• Between the noon and midnight in the World Time Mode, a PM indicator (PM) appears above the hour digits in the lower left display.
• When the city code (time zone) you want is selected, you can press A to display the date. After about one second, the watch will resume regular timekeeping for the currently selected city.

To toggle a city code time between Standard Time and Daylight Saving Time

1. In the World Time Mode, press D to display the city code (time zone) whose Standard Time/Daylight Saving Time setting you want to change.
2. Hold down A for about three seconds to toggle between Daylight Saving Time (DST indicator displayed) and Standard Time (DST indicator not displayed).
   • The DST indicator is shown in the lower left display while Daylight Saving Time is turned on.
   • You can turn on DST individually for each city code, except UTC.
   • Turning on DST for the city code that is currently selected as your Home City will turn on DST for normal timekeeping.

Swapping your Home City and World Time City
You can use the procedure below to swap your Home City and World Time City. This changes your Home City to your World Time City, and your World Time City to your Home City. This capability can come in handy when you frequently travel between two cities in different time zones.

To swap your Home City and World Time City

1. In the World Time Mode, use D to select the World Time City you want.
2. Hold down A and B until the watch beeps.

• This will make the World Time City you selected in step 1 your Home City, and cause the hour and minute hands to move to the current time in that city. At the same time, it will change the Home City you had selected prior to step 2 your World Time City, and cause the content of lower left display to change accordingly.
• After swapping the Home City and World Time City, the watch stays in the World Time Mode with the city that was selected as the Home City prior to step 2 now displayed as the World Time City.

Alarms

When an alarm is turned on, the alarm tone will sound when its alarm time is reached. One of the alarms is a snooze alarm, while the other four are daily alarms. You also can turn on an Hourly Time Signal that causes the watch to beep twice every hour on the hour.

• There are five alarm screens numbered AL1, AL2, AL3 and AL4 for the daily alarm, and a snooze alarm screen indicated by SNZ. The Hourly Time Signal screen is indicated by SIG.
• All of the operations in this section are performed in the Alarm Mode, which you enter by pressing C.

To set an alarm time

1. In the Alarm Mode, use D to scroll through the alarm screens until the one whose time you want to set is displayed.
   • To set a daily alarm, display alarm screen AL1, AL2, AL3 or AL4. To set the snooze alarm, display the SNZ screen.
   • SIG is the hourly time signal setting.
   • The snooze alarm repeats every five minutes.
2. After you select an alarm, hold down A for about three seconds until the hour setting of the alarm time starts to flash. This is the setting mode.
   • This operation turns on the alarm automatically.
3. Press C to move the flashing between the hour and minute settings.
4. While a setting is flashing, use D (+) and B (–) to change it.
5. Press A to exit the setting mode.

Alarm Operation
The alarm tone sounds at the preset time for 10 seconds, regardless of the mode the watch is in. In the case of the snooze alarm, the alarm operation is performed a total of seven times, every five minutes, or until you turn the alarm off.

• Alarm and Hourly Time Signal operations are performed in accordance with the current time in your Home City, as kept in the Timekeeping Mode.
• To stop the alarm tone after it starts to sound, press any button.
• Performing any one of the following operations during a 5-minute interval between snooze alarms cancels the current snooze alarm operation.
  Displaying the Timekeeping Mode setting screen
  Displaying the SNZ setting screen

To turn an alarm on and off

1. In the Alarm Mode, use D to select an alarm.
2. Press A to toggle it on and off.
   • Turning on a alarm (AL1, AL2, AL3, AL4 or SNZ) displays the alarm on indicator on its Alarm Mode screen.
   • In all modes, the alarm on indicator is shown for any alarm that currently is turned on.
   • The alarm on indicator flashes while the alarm is sounding.
   • The snooze alarm indicator flashes while the snooze alarm is sounding and during the 5-minute intervals between alarms.

To turn the Hourly Time Signal on and off

1. In the Alarm Mode, use D to select the Hourly Time Signal (SIG).
2. Press A to toggle it on and off.
   • The Hourly Time Signal on indicator is shown on the display in all modes while this function is turned on.

Illumination

An LED (light-emitting diode) illuminates the face of the watch for easy reading in the dark. The watch’s auto light switch turns on illumination automatically when you angle the watch towards your face.

• The auto light switch must be turned on (indicated by the auto light switch indicator) for it to operate.
• See “Illumination Precautions” for other important information about using illumination.

To illuminate the display manually
In any mode, press B to turn on illumination.

• The above operation turns on illumination regardless of the current auto light switch setting.
• You can use the procedure below to select either 1.5 seconds or 3 seconds as the illumination duration. When you press B, the illumination will remain on for about 1.5 seconds or 3 seconds, depending on the current illumination duration setting.

To specify the illumination duration

1. In the Timekeeping Mode, hold down A until the display contents start to flash. This is the setting screen.
2. Press C nine times to display the current illumination duration LT1 (LT1) or LT3 (LT3).
3. Press D to toggle the setting between LT1(1.5 seconds) and LT3 (three seconds).
4. Press A to exit the setting screen.

About the Auto Light Switch
Turning on the auto light switch causes illumination to turn on, whenever you position your wrist as described below in any mode.
Moving the watch to a position that is parallel to the ground and then tilting it towards you more than 40 degrees causes illumination to turn on.

• Wear the watch on the outside of your wrist.

Warning!

• Always make sure you are in a safe place whenever you are reading the display of the watch using the auto light switch. Be especially careful when running or engaged in any other activity that can result in accident or injury. Also take care that sudden illumination by the auto light switch does not startle or distract others around you.
• When you are wearing the watch, make sure that its auto light switch is turned off before riding a bicycle or operating a motorcycle or any other motor vehicle. Sudden and unintended operation of the auto light switch can create a distraction, which can result in a traffic accident and serious personal injury. To turn the auto light switch on and off
  In the Timekeeping Mode, hold down B for about three seconds to toggle the auto light switch on (auto light switch indicator displayed) and off (auto light switch indicator not displayed).
• The auto light switch indicator remains in all modes while the auto light switch is turned on.
• In order to protect against running down the battery, the auto light switch will turn off automatically approximately six hours after you turn it on. Repeat the above procedure to turn the auto light switch back on if you want.

Hand Home Position Correction

The speed hand and hour and minute hands of the watch can be thrown off by exposure to strong magnetism or impact. The watch is designed to correct speed, hour and minute hand manually.

To adjust home positions

1. In the Timekeeping Mode, hold down D for about three seconds until H-SET ( ) appears in the lower right display and Sub (Sub) appears in the lower left display.
   • This is the home position adjustment mode.
2. Check the position of the speed hand.
   • The speed hand is in the correct home position if it is pointed at 50 (12 o’clock). If it isn’t, use D to move the hand clockwise until it is.
   • After confirming that the speed hand is in its correct home position, press C.
3. Check the positions of the hour and minute hands.
   • The hands are in the correct home positions if they are pointed at 12 o’clock. If they aren’t, use D (clockwise) and B (counterclockwise) to adjust their positions.
4. When everything is the way you want, press A to return to regular timekeeping.
   • This will cause the hour and minute hands to move to the current Timekeeping Mode time and the speed hand to move to the 0 position.
   • Pressing C here will return to the setting at the beginning of step 2.

Reference

This section contains more detailed and technical information about watch operation. It also contains important precautions and notes about the various features and functions of this watch.

Auto Return Features

• If you leave the watch with a flashing setting on the display for two or three minutes without performing any operation, the watch will exit the setting mode automatically.
• The watch will return to the Timekeeping Mode automatically if you do not perform any operation for two or three minutes in the Alarm Mode.
  High-Speed Movement
• The D and B buttons are used to change setting in various setting modes. In most cases, holding down these buttons will start high-speed movement.
  Initial Screens
  When you enter the Stopwatch Mode, World Time Mode or Alarm Mode, the data you were viewing when you last exited the mode will appear first.
  Timekeeping
• Resetting the seconds to 00 while the current count is in the range of 30 to 59 causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are reset to 00 without changing the minutes.
• The year can be set in the range of 2000 to 2099.
• The watch’s built-in full automatic calendar makes allowances for different month lengths and leap years. Once you set the date, there should be no reason to change it except when battery has replaced.
• The current time for all city codes in the Timekeeping Mode and World Time Mode is calculated in accordance with the Coordinated Universal Time (UTC) for each city, based on your Home City time setting.
  Illumination Precautions
• Illumination may be difficult to see when viewed under direct sunlight.
• Illumination turns off automatically whenever an alarm sounds.
• Illumination turns off automatically depends on the current illumination duration setting.
• Frequent use of illumination runs down the battery.

Auto light switch precautions

• Avoid wearing the watch on the inside of your wrist. Doing so causes the auto light switch to operate when it is not needed, which shortens battery life. If you want to wear the watch on the inside of your wrist, turn off the auto light switch feature.
• Illumination may not turn on if the face of the watch is more than 15 degrees above or below parallel. Make sure that the back of your hand is parallel to the ground.
• Illumination turns off in about 1.5 seconds or 3 seconds, even if you keep the watch pointed towards your face.
• Static electricity or magnetic force can interfere with proper operation of the auto light switch. If illumination does not turn on, try moving the watch back to the starting position (parallel with the ground) and then tilt it back toward you again. If this does not work, drop your arm all the way down so it hangs at your side, and then bring it back up again.
• Under certain conditions, illumination may not turn on until about one second after you turn the face of the watch towards you. This does not necessarily indicate malfunction of the auto light switch.
• You may notice a very faint clicking sound coming from the watch when it is shaken back and forth. This sound is caused by mechanical operation of the auto light switch, and does not indicate a problem with the watch.

Specifications

• Accuracy at normal temperature: ± 15 seconds a month
  Digital Timekeeping: Hour, minutes, seconds, p.m. (P), month, day, day of the week
  • Time format: 12-hour and 24-hour
  • Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099
  • Other: Home City code (can be assigned one of 48 city codes); Standard Time / Daylight Saving Time (summer time)
• Analog Timekeeping: Hour, minutes (hand moves every 20 seconds) Stopwatch:
  • Measuring unit: 1/1000 second
    Measuring capacity: 99:59’59.999″
    Measuring modes: Elapsed time, Lap time, Split time Other: Speed
• Countdown Timer:
  • Measuring unit: 1 second
  • Input range: 1 minute to 24 hours (1-minute increments)
  • Other: Auto-repeat timing
• World Time: 48 cities (29 time zones)
  • Other: Daylight Saving Time/Standard Time, Home City/World Time City Swapping
• Alarms: Four daily alarms, one snooze alarm, Hourly Time Signal
• Illumination: LED (light-emitting diode), Auto Light Switch; Selectable illumination duration
• Battery : One lithium battery (Type: CR1220) Approximate Battery Life: 2 years on type CR1220 (ten seconds of alarm operation per day, one illumination operation (1.5 seconds) per day)

City Code Table

• Based on data as of June 2009.
• The rules governing global times (UTC offset and GMT differential) and summer time are determined by each individual country.

CASIO 5612 G-Shock Smart Watch

• Depending on the model of your watch, digital display text appears either as dark figures on a light background or light figures on a dark background. All sample displays in this manual are shown using dark figures on a light background.
• Button operations are indicated using the letters shown in the illustration.
• Note that the product illustrations in this manual are intended for reference only, and so the actual product may appear somewhat different than depicted by an illustration.
• Each section of this manual provides you with the information you need to perform operations in each mode. Further details and technical information can be found in the “Reference” section.
• To ensure that this watch provides you with the years of service for which it is designed, carefully read and follow the instructions under “Operating Precautions” and “User Maintenance.”

General Guide

• Press C to change from mode to mode.
• In any mode (except a setting mode), press B to illuminate the face.

Timekeeping

You can adjust the Home Time city date and time in the Timekeeping Mode.

• The analog time of this watch is synchronized with the digital time. The analog time setting is adjusted automatically whenever you change the digital time.
• If the analog time does not match the digital time for any reason, use the procedure described under “To adjust home positions” (page E-44) to match the analog setting to the digital setting.
• Pressing D in the Timekeeping Mode toggles digital display between the Home City Date and Home City Time.

To set the digital time and date

1. In the Timekeeping Mode, hold down A for at least three seconds until the currently selected city code flashes in the lower digital display. This is the setting mode.
2. Use D (east) and B (west) to display the city code you want to select.
   • Make sure you select your Home City code before changing any other setting.
   • For full information on city codes, see the “City Code Table” at the back of this manual.
3. Press C to change the flashing screen content in the sequence shown below to select the other settings.
4. When the setting you want to change is flashing, use D or B to change it as described below.
5. Press A to exit the setting mode.
   • The day of the week is displayed automatically in accordance with the date (year, month, and day) settings.

Daylight Saving Time (DST)

Daylight Saving Time (summer time) advances the time setting by one hour from Standard Time. Remember that not all countries or even local areas use Daylight Saving Time.

To change the Daylight Saving Time (summer time) setting

1. In the Timekeeping Mode, hold down A for at least three seconds until the currently selected city codeflashes in the lower digital display. This is the setting mode.
2. Press C. This will display the DST setting screen.
3. Use D to toggle the DST setting on (on) and off (OFF).
   • The default DST setting is off (OFF).
4. When the setting you want is selected, press A to exit the setting mode.
   • The DST indicator appears to indicate that Daylight Saving Time is turned on.

12-hour and 24-hour timekeeping.

• With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without the PM indicator.
• The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is applied in all other modes.

Stopwatch

You can use the stopwatch to measure elapsed time, lap times and split times. If you specify a distance value, the stopwatch also will calculate and display speeds.

• The digital display range of the stopwatch is 99 hours, 59 minutes, 59.999 seconds. The stopwatch continues to run until you stop it. If it reaches the above limit, it will restart the time measurement from zero.
• The stopwatch operation continues even if you exit the Stopwatch Mode. If you exit the Stopwatch Mode while a stopwatch operation is in progress, the upper digital segments will appear and disappear sequentially in accordance with the passage of timekeeping seconds. This is to let you know that a stopwatch operation is in progress.
• All of the operations in this section are performed in the Stopwatch Mode, which you enter by pressing C (page E-7).

Important!

• Check to make sure that the speed hand is not moving before you perform any Stopwatch Mode button operation. Specifying a Distance Value You can use the procedure below to specify a distance value, if you want. If you specify a distance value, the watch will calculate and indicate speed for certain stopwatch operations.
• The distance value represents kilometers, miles, or any other distance unit you want. Specifying a distance value of 10.0, for example, can mean 10.0 kilometers or 10.0 miles.
• No speed calculation is performed when 0.0 is specified as the current distance value.
• For lap time readings, you can specify either the lap distance (when all the laps are the same distance) or the total race distance.
• For split time readings, you can specify the total race distance only. Though the watch will indicate a speed each time you take a split reading, they will be based on the total race distance, and so they will not indicate actual intermediate split speeds.

To specify a distance value

1. In the Stopwatch Mode, make sure the stopwatch is stopped and reset to all zeros.
   • If you need to reset the stopwatch to all zeros, press A.
2. Hold down A for at least three seconds until the current distance value setting flashes in the upper digital display.
   • This is the distance value setting mode.
3. Press C to move the flashing between the values on the left side and right side of the distance value decimal point.
4. While a distance value is flashing, use D (+) and B (–) to change it.
   • You can specify a distance value in the range of 0.1 to 99.9.
5. After specifying the distance value you want, press A to exit the setting mode.

How speed is indicated

• While an elapsed time measurement operation is being performed in the Stopwatch Mode, the watch will indicate a speed value, which is calculated based on the distance you specified and the elapsed time. The speed value is indicated as described below.
• Upper digital segments: 100 unit
• 1000 appears when the speed exceeds 1,000.
• MACH appears when the speed exceeds 1,226.
• The speed hand indicates speed values less than 100. Only even-numbered values are indicated.
• Speed can be indicated from 0 to 1998. OVER is indicated by the speed hand when the speed exceeds 1998.

Example:

• When the speed value is 1,740.
• Speed hand: Indicates 40.
• Upper digital segments: Indicate 700.
• 1000 and MACH indicators: Displayed

Time Measurement
You need to specify either lap time (page E-21) or split time (page E-23) measurement before you start a stopwatch operation.  If you want to measure total elapsed time, select split time measurement.

To specify lap time or split time readings

1. In the Stopwatch Mode, make sure the stopwatch is stopped and reset to all zeros.
   • Make sure that LAP (lap times) or SPL (split times) is shown in the lower digital display.
   • If you need to reset the stopwatch to all zeros, press A.
2. You can toggle between LAP (lap times) and SPL (split times) by pressing A.

Elapsed Time Measurement

Use the following procedure to measure elapsed time, without taking lap time or split time readings. To perform elapsed time measurement
Select split time (SPL) measurement and then perform the following button operations. D Start ➝ D Stop ➝ A Reset

• If you have a distance value (page E-15) specified for the current elapsed time measurement, the upper digital segments and speed hand will indicate the speed when you press D to stop the elapsed time operation.
• After pressing D to stop an elapsed time operation, you could press D again to restart from the point where you left off.

Lap Time

Lap time readings appear in the upper digital display. They show the time elapsed since the last lap time reading was taken.

• If you want the watch to calculate the speed of each lap (when all of the laps are the same distance), specify the lap distance for the distance setting (page E-15).
• If you want the watch to calculate the speed of the entire race, specify the race distance for the distance setting (page E-15). A speed will be indicated each time you take a lap reading, but these lap speeds will not indicate actual speed of the entire race.

To set up the stopwatch to take lap time readings

1. In the Stopwatch Mode, make sure the stopwatch is stopped and reset to all zeros.
   • If you need to reset the stopwatch to all zeros, press A.
2. Make sure that LAP (lap times) is shown in the lower digital display.
   • If SPL (split times) is displayed, press A to toggle it to LAP.

To perform a lap time measurement

Select lap time (LAP) measurement and then perform the following button operations. D Start ➝ A Lap* ➝ A Lap* ➝ D Stop ➝ A Reset
* Lap time remains frozen in the upper digital display for about 12 seconds. After that, elapsed time measurement reappears.

• You can press A to take lap readings as many times as you like. The LAP indicator flashes while a lap reading is displayed.
• While a lap time is displayed, the lower digital display will alternate between the lap hour value and the lap number (#01 to #99). If you take more than 99 lap readings, the lap number will restart from #00 following lap #99.
• Pressing D to stop elapsed time measurement displays the time (and speed if a distance is specified) of the final lap.

Split Time

Split time readings appear in the upper digital display. They show the time elapsed since the beginning of the current time measurement.

• If you want the watch to calculate the speed of the race, specify the race distance for the distance setting (page E-15).
• For split time readings, you can specify the total race distance only. Though the watch will indicate a speed each time you take a split reading, they will be based on the total race distance, and so they will not indicate actual intermediate split speeds.

To set up the stopwatch to take split time readings

1. In the Stopwatch Mode, make sure the stopwatch is stopped and reset to all zeros.
   • If you need to reset the stopwatch to all zeros, press A.
2. Make sure that SPL (split times) is shown in the lower digital display.
   • If LAP (lap times) is displayed, press A to toggle it to SPL.

To perform a split time measurement

Select split time (SPL) measurement and then perform the following button operations. D Start ➝ A Split ➝ A Split Release* ➝ D Stop ➝ A Reset
* The split time is released automatically if you do not press A within about 12 seconds.

• You can press A to take split readings as many times as you like. The SPL indicator flashes while a split reading is displayed.
• The stopwatch continues elapsed time measurement internally while a split time reading is displayed.
• Pressing A while a split time is displayed will switch back to normal elapsed time measurement. The elapsed time will appear in the upper digital display.
• You also could press D to stop elapsed time measurement instead.
• Pressing D to stop elapsed time measurement displays the time (and speed if a distance is specified) of the final split (which is the overall elapsed time).

Countdown Timer

You can set the countdown start time within a range of one minute to 24 hours. An alarm sounds when the countdown reaches zero.

• You also can select auto-repeat, which automatically restarts the countdown from the original value you set whenever zero is reached.
• All of the operations in this section are performed in the Countdown Timer Mode, which you enter by pressing C (page E-7).

To use the countdown timer

Press D while in the Countdown Timer Mode to start the countdown in the upper digital display.

• When the end of the countdown is reached, the alarm will sound for 10 seconds or until you stop it by pressing any button.
• If auto-repeat is turned off, the countdown time is reset to its starting value automatically after the alarm stops.
• If auto-repeat is turned on, the countdown will restart automatically without pausing when it reaches zero.
• The countdown timer measurement operation continues even if you exit the Countdown Timer Mode.
• Press D while a countdown operation is in progress to pause it. Press D again to resume the countdown.
• To stop a countdown timer operation completely, first pause it (by pressing D), and then press A. This returns the countdown time to its starting value.

To configure countdown start time and auto-repeat settings

1. While the countdown start time is in the Countdown Timer Mode, hold down A for at least three seconds until the hour setting of the countdown start time starts to flash. This is the setting mode.
   • If the countdown start time is not displayed, use the procedure under “To use the countdown timer” (page E-27) to display it.
2. Press C to move the flashing in the sequence shown below, and select the setting you want to change.
3. Perform the following operations, depending on which setting currently is selected above.
   • While the start time setting is flashing, use D (+) and B (–) to change it.
   • To toggle auto repeat between on and off, press D while the on/off setting is flashing.
4. Press A to exit the setting mode.
   • The auto-repeat on ( ) indicator is displayed on the Countdown Timer Mode screen while this function is turned on.

World Time

World Time digitally displays the current time in one of 48 cities (29 time zones) around the world. A simple operation swaps your Home City with the currently selected World Time City.

• The times kept in the World Time Mode are synchronized with the time being kept in the Timekeeping Mode. If you feel that there is an error in any World Time Mode time, check to make sure you have the correct city selected as your Home City. Also check to make sure that the current time as shown in the Timekeeping Mode is correct.
• Times in the World Time Mode are based on UTC offsets. See the “City Code Table” at the back of this manual for information about the UTC offsets that are supported.
• All of the operations in this section are performed in the World Time Mode, which you enter by pressing C (page E-7).

To view the current time in another time zone

In the World Time Mode, use D to scroll through available city codes (time zones).

• The upper digital display will show the time in the currently selected World Time City.
• A PM indicator will be displayed in the upper digital display between the hours of noon and midnight.
• When the city code (time zone) you want is selected, you can press A to display the date. After about one second, the watch will resume regular timekeeping for the currently selected city.

To toggle a city code time between Standard Time and Daylight Saving Time

1. In the World Time Mode, press D to display the city code (time zone) whose Standard Time/Daylight Saving Time setting you want to change.
2. Hold down A for at least three seconds to toggle between Daylight Saving Time (DST indicator displayed) and Standard Time (DST indicator not displayed).
   • A DST indicator will be displayed in the upper digital display if Daylight Saving Time is turned on.
   • You can turn on DST individually for each city code, except UTC.
   • Turning on DST for the city code that is currently selected as your Home City will turn on DST for normal timekeeping.

Swapping your Home City and World Time City

You can use the procedure below to swap your Home City and World Time City. This changes your Home City to your World Time City, and your World Time City to your Home City. This capability can come in handy when you frequently travel between two cities in different time zones.

To swap your Home City and World Time City

1. In the World Time Mode, use D to select the World Time City you want.
2. Hold down A and B until the watch beeps.
   • This will make the World Time City you selected in step 1 your Home City, and cause the hour and minute hands to move to the current time in that city. At the same time, it will change the Home City you had selected prior to step 2 your World Time City, and cause the content of upper digital display to change accordingly.
   • After swapping the Home City and World Time City, the watch stays in the World Time Mode with the city that was selected as the Home City prior to step 2 now displayed as the World Time City.

Alarms

When an alarm is turned on, the alarm tone will sound when its alarm time is reached. One of the alarms is a snooze alarm, while the other four are daily alarms. You also can turn on an Hourly Time Signal that causes the watch to beep twice every hour on the hour.

• There are five alarm screens numbered AL1, AL2, AL3 and AL4 for the daily alarm, and a snooze alarm screen indicated by SNZ. The Hourly Time Signal screen is indicated by SIG.
• All of the operations in this section are performed in the Alarm Mode, which you enter by pressing C (page E-7).

To set an alarm time

1. In the Alarm Mode, use D to scroll through the alarm screens until the one whose time you want to set is displayed.
   • To set a daily alarm, display alarm screen AL1, AL2, AL3 or AL4. To set the snooze alarm, display the SNZ screen.
   • SIG is the Hourly Time Signal setting (page E-38).
   • The snooze alarm repeats every five minutes.
2. After you select an alarm, hold down A for at least three seconds until the hour setting of the alarm time starts to flash. This is the setting mode.
   • This operation turns on the alarm automatically.
3. Press C to move the flashing between the hour and minute settings.
4. While a setting is flashing, use D (+) and B (–) to change it.
5. Press A to exit the setting mode.

Alarm Operation

The alarm tone sounds at the preset time for 10 seconds, regardless of the mode the watch is in. In the case of the snooze alarm, the alarm operation is performed a total of seven times, every five minutes, or until you turn the alarm off (page E-37).

• Alarm and Hourly Time Signal operations are performed in accordance with the current time in your Home City, as kept in the Timekeeping Mode.
• To stop the alarm tone after it starts to sound, press any button.
• Performing any one of the following operations during a 5-minute interval between snooze alarms cancels the current snooze alarm operation. Displaying the Timekeeping Mode setting screen (page E-9) Displaying the SNZ setting screen (page E-35)

To turn an alarm on and off

1. In the Alarm Mode, use D to select an alarm.
2. Press A to toggle it on (on) and off (OFF).
   • Turning on a alarm (AL1, AL2, AL3, AL4 or SNZ) displays the alarm on indicator on its Alarm Mode screen.
   • In all modes, the alarm on indicator is shown when any alarm is turned on.
   • The alarm on indicator flashes while the alarm is sounding.
   • The snooze alarm indicator flashes while the snooze alarm is sounding and during the 5-minute intervals between alarms.

To turn the Hourly Time Signal on and off

1. In the Alarm Mode, use D to select the Hourly Time Signal (SIG) (page E-35).
2. Press A to toggle it on (on) and off (OFF).
   • The Hourly Time Signal on indicator is shown on the display in all modes while this function is turned on.

Illumination

An LED (light-emitting diode) illuminates the face of the watch for easy reading in the dark. The watch’s auto light switch turns on illumination automatically when you angle the watch towards your face.

• The auto light switch must be turned on (indicated by the auto light switch on indicator) for it to operate.
• See “Illumination Precautions” (page E-48) for other important information about using illumination.

To illuminate the face manually

In any mode, press B to turn on illumination.

• The above operation turns on illumination regardless of the current auto light switch setting.
• You can use the procedure below to select either 1.5 seconds or 3 seconds as the illumination duration. When you press B, illumination will remain on for about 1.5 seconds or 3 seconds, depending on the current illumination duration setting.

To specify the illumination duration

1. In the Timekeeping Mode, hold down A until the display contents start to flash. This is the setting mode.
2. Press C nine times to display the current illumination duration LT1 or LT3.
3. Press D to toggle the setting between LT1 (1.5 seconds) and LT3 (three seconds).
4. Press A to exit the setting mode.

About the Auto Light Switch

Turning on the auto light switch causes illumination to turn on, whenever you position your wrist as described below in any mode. Moving the watch to a position that is parallel to the ground and then tilting it towards you more than 40 degrees causes illumination to turn on.

• Wear the watch on the outside of your wrist.

Warning!

• Always make sure you are in a safe place whenever you are reading the watch using the auto light switch. Be especially careful when running or engaged in any other activity that can result in accident or injury. Also take care that sudden illumination by the auto light switch does not startle or distract others around you.
• When you are wearing the watch, make sure that its auto light switch is turned off before riding a bicycle or operating a motorcycle or any other motor vehicle. Sudden and unintended operation of the auto light switch can create a distraction, which can result in a traffic accident and serious personal injury.

To turn the auto light switch on and off

In the Timekeeping Mode, hold down B for at least three seconds to toggle the auto light switch on (auto light switch on indicator displayed) and off (auto light switch on indicator not displayed).

• The auto light switch on indicator remains in all modes while the auto light switch is turned on.
• In order to protect against running down the battery, the auto light switch will turn off automatically approximately six hours after you turn it on. Repeat the above procedure to turn the auto light switch back on if you want.

Hand Home Position Correction

The speed, hour, and minute hands of the watch can be thrown off by exposure to strong magnetism or impact. The watch is designed to correct speed, hour and minute hand manually.

To adjust home positions

1. In the Timekeeping Mode, hold down D for at least three seconds until Sub flashes in the upper digital display.
   • This is the home position adjustment mode.
2. Check the position of the speed hand.
   • The speed hand is in the correct home position if it is pointed at 50 (12 o’clock). If it isn’t, use D to move the hand clockwise until it is.
   • After confirming that the speed hand is in its correct home position, press C.
3. Check the positions of the hour and minute hands.
   • The hands are in the correct home positions if they are pointed at 12 o’clock. If they aren’t, use D (clockwise) and B (counterclockwise) to adjust their positions.
4. When everything is the way you want, press A to return to regular timekeeping.
   • This will cause the hour and minute hands to move to the current Timekeeping Mode time and the speed hand to move to the 0 position.
   • Pressing C here will return to the setting at the  beginning of step 2.

Reference

This section contains more detailed and technical information about watch operation. It also contains important precautions and notes about the various features and functions of this watch.

Auto Return Features

• If you leave the watch with a flashing setting on any digital display for two or three minutes without performing any operation, the watch will exit the setting mode automatically.
• The watch will return to the Timekeeping Mode automatically if you do not perform any operation for two or three minutes in the Alarm Mode.

High-Speed Movement

• The D and B buttons are used to change setting in various setting modes. In most cases, holding down these buttons will start high-speed movement.

Initial Screens
When you enter the Stopwatch Mode, World Time Mode or Alarm Mode, the data you were viewing when you last exited the mode will appear first.

Timekeeping

• Resetting the seconds to 00 while the current count is in the range of 30 to 59 causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are reset to 00 without changing the minutes.
• The year can be set in the range of 2000 to 2099.
• The watch’s built-in full automatic calendar makes allowances for different month lengths and leap years. Once you set the date, there should be no reason to change it except when battery has replaced.
• The current time for all city codes in the Timekeeping Mode and World Time Mode is calculated in accordance with the Coordinated Universal Time (UTC) for each city, based on your Home City time setting.

Illumination Precautions

• Illumination may be difficult to see when viewed under direct sunlight.
• Illumination turns off automatically whenever an alarm sounds.
• Frequent use of illumination runs down the battery.

Auto light switch precautions

• Avoid wearing the watch on the inside of your wrist. Doing so causes the auto light switch to operate when it is not needed, which shortens battery life. If you want to wear the watch on the inside of your wrist, turn off the auto light switch feature.
• Illumination may not turn on if the face of the watch is more than 15 degrees above or below parallel. Make sure that the back of your hand is parallel to the ground.
• Illumination turns off in about 1.5 seconds or 3 seconds, even if you keep the watch pointed towards your face.
• Static electricity or magnetic force can interfere with proper operation of the auto light switch. If illumination does not turn on, try moving the watch back to the starting position (parallel with the ground) and then tilt it back toward you again. If this does not work, drop your arm all the way down so it hangs at your side, and then bring it back up again.
• Under certain conditions, illumination may not turn on until about one second after you turn the face of the watch towards you. This does not necessarily indicate malfunction of the auto light switch.
• You may notice a very faint clicking sound coming from the watch when it is shaken back and forth. This sound is caused by mechanical operation of the auto light  switch, and does not indicate a problem with the watch.

Specifications

• Accuracy at normal temperature: ± 15 seconds a month
• Digital Timekeeping: Hour, minutes, seconds, p.m. (P), month, day, day of the week
• Time format: 12-hour and 24-hour
• Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099
• Other: Home City code (can be assigned one of 48 city codes); Standard Time /
• Daylight Saving Time (summer time) Analog Timekeeping: Hour, minutes (hand moves every 20 seconds) Stopwatch:
• Measuring unit: 1/1000 seconds
• Measuring capacity: 99:59’59.999″
• Measuring accuracy: ±0.0006%
• Measuring modes: Elapsed time, Lap time, Split time
• Other: Speed
• Countdown Timer:
• Measuring unit: 1 second
• Input range: 1 minute to 24 hours (1-minute increments)
• Other: Auto-repeat timing
• World Time: 48 cities (29 time zones)
• Other: Daylight Saving Time/Standard Time; Home City/World Time City
  Swapping
• Alarms: 5 daily alarms (with one snooze alarm); Hourly Time Signal
• Illumination: LED (light-emitting diode); Auto Light Switch; Selectable illumination duration
• Battery: One lithium battery (Type: CR1220)
• Approximate Battery Life: 2 years on type CR1220 (10 seconds of alarm operation per day, one illumination operation (1.5 seconds) per day)
  Specifications are subject to change without notice.

Countdown Timer:

• Measuring unit: 1 second
• Input range: 1 minute to 24 hours (1-minute increments)
• Other: Auto-repeat timing
• World Time: 48 cities (29 time zones)
• Other: Daylight Saving Time/Standard Time; Home City/World Time City
  Swapping
• Alarms: 5 daily alarms (with one snooze alarm); Hourly Time Signal
• Illumination: LED (light-emitting diode); Auto Light Switch; Selectable illumination duration
• Battery: One lithium battery (Type: CR1220)
• Approximate Battery Life: 2 years on type CR1220 (10 seconds of alarm operation per day, one illumination operation (1.5 seconds) per day)
  Specifications are subject to change without notice.

Operating Precautions

Water Resistance

• The information below applies to watches with WATER RESIST or WATER RESISTANT marked on the back cover.
  

  		Water Resistance Under Daily Use	Enhanced Water Resistance Under Daily Use
  			5 Atmospheres	10 Atmospheres	20 Atmospheres
  Marking	On watch front or on back cover	No BAR mark	5BAR	10BAR	20BAR
  Example of Daily Use	Hand washing, rain	Yes	Yes	Yes	Yes
  	Water-related work, swimming	No	Yes	Yes	Yes
  	Windsurfing	No	No	Yes	Yes
  	Skin diving	No	No	Yes	Yes

• Do not use your watch for scuba diving or other types of diving that requires air tanks.
• Watches that do not have WATER RESIST or WATER RESISTANT marked on the back cover are not protected against the effects of sweat. Avoid using such a watch under conditions where it will be exposed to large amounts of sweat or moisture, or to direct splashing with water.
• Even if a watch is water resistant, note the usage precautions described below. Such types of use reduce water resistance performance and can cause fogging of the glass.
  • Do not operate the crown or buttons while your watch is submersed in water or wet.
  • Avoid wearing your watch while in the bath.
  • Do not wear your watch while in a heated swimming pool, sauna, or any other high temperature/high humidity environment.
  • Do not wear your watch while washing your hands or face, while doing housework, or while performing any other task that involves soaps or detergents.
• After submersion in seawater, use plain water to rinse all salt and dirt from your watch.
• To maintain water resistance, have the gaskets of your watch replaced periodically (about once every two or three years).
• A trained technician will inspect your watch for proper water resistance whenever you have its battery replaced. Battery replacement requires the use of special tools. Always request battery replacement from your original retailer or from an authorized CASIO service center.
• Some water-resistant watches come with fashionable leather bands. Avoid swimming, washing, or any other activity that causes direct exposure of a leather band to water.
• The inside surface of the watch glass may fog when the watch is exposed to a sudden drop in temperature. No problem is indicated if the fogging clears up relatively quickly. Sudden and extreme temperature changes (such as coming into an air conditioned room in the summer and standing close to an air conditioner outlet, or leaving a heated room in the winter and allowing your watch to come into contact with snow) can cause it to take longer for glass fogging to clear up. If glass fogging does not clear up or if you notice moisture inside of the glass, immediately stop using your watch and take it to your original retailer or to an authorized CASIO service center.
• Your water-resistant watch has been tested in accordance with International Organization for Standardization regulations.

Band

• Tightening the band too tightly can cause you to sweat and make it difficult for air to pass under the band, which can lead to skin irritation. Do not fasten the band too tightly. There should be enough room between the band and your wrist so you can insert your finger.
• Deterioration, rust, and other conditions can cause the band to break or come off of your watch, which in turn can cause band pins to fly out of position or to fall out. This creates the risk of your watch falling from your wrist and becoming lost, and also creates the risk of personal injury. Always take good care of your band and keep it clean.
• Immediately stop using a band if you even notice any of the following: loss of band flexibility, band cracks, band discoloration, band looseness, band connecting pin flying or falling out, or any other abnormality. Take your watch to your original retailer or to a CASIO service center for inspection and repair (for which you will be charged) or to have the band replaced (for which you will be charged).

Temperature

• Never leave your watch on the dashboard of a car, near a heater, or in any other location that is subject to very high temperatures. Do not leave your watch where it will be exposed to very low temperatures. Temperature extremes can cause your watch to lose or gain time, to stop, or otherwise malfunction.
• Leaving your watch in an area hotter than +60°C (140°F) for long periods can lead to problems with its LCD. The LCD may become difficult to read at temperatures lower than 0°C (32°F) and greater than +40°C (104°F).
  Impact
• Your watch is designed to withstand impact incurred during normal daily use and during light activity such as playing catch, tennis, etc. Dropping your watch or otherwise subjecting it to strong impact, however, can lead to malfunction. Note that watches with shock-resistant designs (G-SHOCK, BABY-G, G-MS) can be worn while operating a chain saw or engaging in other activities that generate strong vibration, or while engaging in strenuous sports activities (motocross, etc.)

Magnetism

• Though this watch is designed to maintain normal performance in DC magnetic fields up to 4800 A/m, it should not be allowed to come into contact with or be located close to a source of strong magnetism (audio speakers, magnetic necklace, cell phone, etc.) Sources of strong magnetism can affect the motor that moves the hands of the watch, causing them to slow down, speed up, or stop, resulting in the incorrect time being displayed.
• Very strong magnetism (from medical equipment, etc.) should be avoided because it can cause malfunction of your watch and damage to electronic components. Electrostatic Charge
• Exposure to very strong electrostatic charge can cause your watch to display the wrong time. Very strong electrostatic charge even can damage electronic components.
• Electrostatic charge can cause the display to go blank momentarily or cause a rainbow effect on the display.

Chemicals
Do not allow your watch to come into contact with thinner, gasoline, solvents, oils, or fats, or with any cleaners, adhesives, paints, medicines, or cosmetics that contain such ingredients. Doing so can cause discoloration of or damage to the resin case, resin band, leather, and other parts.

Storage
If you do not plan to use your watch for a long time, thoroughly wipe it free of all dirt, sweat, and moisture, and store it in a cool, dry place.

Resin Components

• Allowing your watch to remain in contact with other items or storing it together with other items for long periods while it is wet can cause color on resin components to transfer to the other items, or the color of the other items to transfer to the resin components of your watch. Be sure to dry off your watch thoroughly before storing it and make sure it is not in contact with other items.
• Leaving your watch where it is exposed to direct sunlight (ultraviolet rays) for long periods or failure to clean dirt from your watch for long periods can cause it to become discolored.
• Friction caused by certain conditions (strong external force, sustained rubbing, impact, etc.) can cause discoloration of painted components.
• If there are printed figures on the band, strong rubbing of the printed area can cause discoloration.
• Leaving your watch wet for long periods can cause fluorescent color to fade. Wipe the watch dry as soon as possible after it becomes wet.
• Semi-transparent resin parts can become discolored due to sweat and dirt, and if exposed to high temperatures and humidity for long periods.
• Daily use and long-term storage of your watch can lead to deterioration, breaking, or bending of resin components. The extent of such damage depends on usage conditions and storage conditions.

Leather Band

• Allowing your watch to remain in contact with other items or storing it together with other items for long periods while it is wet can cause the color of the leather band to transfer to the other items or the color of the other items to transfer to the leather band. Be sure to dry off your watch thoroughly with a soft cloth before storing it and make sure it is not in contact with other items.
• Leaving a leather band where it is exposed to direct sunlight (ultraviolet rays) for long periods or failure to clean dirt from a leather band for long periods can cause it to become discolored.
  CAUTION: Exposing a leather band to rubbing or dirt can cause color transfer and discoloration.

Metal Components

• Failure to clean dirt from metal components can lead to formation of rust, even if components are stainless steel or plated. If metal components exposed to sweat or water, wipe thoroughly with a soft, absorbent cloth and then place the watch in a well-ventilated location to dry.
• Use a soft toothbrush or similar tool to scrub the metal with a weak solution of water and a mild neutral detergent, or with soapy water. Next, rinse with water to remove all remaining detergent and then wipe dry with a soft absorbent cloth. When washing metal components, wrap the watch case with kitchen plastic wrap so it does not come into contact with the detergent or soap.

Bacteria and Odor Resistant Band

• The bacteria and odor resistant band protects against odor generated by the formation of bacteria from sweat, which ensures comfort and hygiene. In order to ensure maximum bacteria and odor resistance, keep the band clean. Use an absorbent soft cloth to thoroughly wipe the band clean of dirt, sweat, and moisture. A bacteria and odor resistant band suppresses the formation of organisms and bacteria. It does not protect against rash due to allergic reaction, etc.

Liquid Crystal Display

• Display figures may be difficult to read when viewed from an angle.
  Note: that CASIO COMPUTER CO., LTD. assumes no responsibility for any damage or loss suffered by you or any third party arising through the use of your watch or its malfunction.

User Maintenance

Caring for Your Watch
Remember that you wear your watch next to your skin, just like a piece of clothing. To ensure your watch performs at the level for which it is designed, keep it clean by frequently wiping with a soft cloth to keep your watch and band free of dirt, sweat, water and other foreign matter.

• Whenever your watch is exposed to sea water or mud, rinse it off with clean fresh water.
• For a metal band or a resin band with metal parts, use a soft toothbrush or similar tool to scrub the band with a weak solution of water and a mild neutral detergent, or with soapy water. Next, rinse with water to remove all remaining detergent and then wipe dry with a soft absorbent cloth. When washing the band, wrap the watch case with kitchen plastic wrap so it does not come into contact with the detergent or soap.
• For a resin band, wash with water and then wipe dry with a soft cloth. Note that sometimes a smudge like pattern may appear on the surface of a resin band. This will not have any effect on your skin or clothing. Wipe with a cloth to remove the smudge pattern.
• Clean water and sweat from a leather band by wiping with a soft cloth.
• Not operating a watch crown, buttons, or rotary bezel could lead to later problems with their operation. Periodically rotate the crown and rotary bezel, and press buttons to maintain proper operation.

Dangers of Poor Watch Care
Rust

• Though the metal steel used for your watch is highly rust-resistant, rust can form if your watch is not cleaned after it becomes dirty.
  • Dirt on your watch can make it impossible for oxygen to come into contact with the metal, which can lead to breakdown of the oxidization layer on the metal surface and the formation of rust.
• Rust can cause sharp areas on metal components and can cause band pins to fly out of position or to fall out. If you ever notice any abnormality immediately stop using your watch and take it to your original retailer or to an authorized CASIO service center.
• Even if the surface of the metal appears clean, sweat and rust in crevasses can soil the sleeves of clothing, cause skin irritation, and even interfere with watch performance.
  Premature Wear
• Leaving sweat or water on a resin band or bezel, or storing your watch an area subject to high moisture can lead to premature wear, cuts, and breaks.
  Skin Irritation
• Individuals with sensitive skin or in poor physical condition may experience skin irritation when wearing a watch. Such individuals should keep their leather band or resin band particularly clean. Should you ever experience a rash or other skin irritation, immediately remove your watch and contact a skin care professional.
  Battery Replacement
• Leave battery replacement up to your original retailer or authorized CASIO service center.
• Have the battery replaced only with the type specified in the User’s Guide. Use of a  different battery type can cause malfunction.
• When replacing the battery, also request a check for proper water resistance.
• Ornamental resin components may become worn, cracked, or bent over time when subjected to normal daily use. Note that if cracking or any other abnormality indicating possible damage is noticed in a watch submitted for battery replacement, your watch will be returned with an explanation of the abnormality, without the requested servicing being performed.

Initial Battery

• The battery that comes loaded in your watch when you purchase it is used for function and performance testing at the factory.
• The test battery may go dead quicker than the normally rated battery life as noted in the User’s Guide. Note that you will be charged for replacement of this battery, even if replacement is required within your watch’s warranty period.

Low Battery Power

• Low battery power is indicated by large timekeeping error, by dim display contents, or by a blank display.
• Operation while battery power is low can result in malfunction. Replace the battery as soon as possible.

City Code Table

• This table shows the city codes of this watch (As of July 2018).
• The rules governing global times (UTC offset and GMT differential) and summer time are determined by each individual country.

CASIO COMPUTER CO., LTD.
6-2, Hon-machi 1-chome
Shibuya-ku, Tokyo 151-8543, Japan