ATH-SPORT70BT
User Manual
Wireless Headphones
Introduction
Thank you for purchasing this Audio-Technica product.
Before using the product, please read through the Quick Start Guide and Caution Guide, as well as this user manual when necessary, to ensure that you will use the product correctly.
Safety precautions
Although this product was designed to be used safely, failing to use it correctly may result in an accident. To ensure safety, observe all warnings and cautions while using the product.
Cautions for the product
- Do not use the product near medical equipment. Radio waves may affect cardiac pacemakers and medical electronic equipment. Do not use the product inside medical facilities.
- When using the product in aircraft, follow airline instructions.
- Do not use the product near automatic control devices such as automatic doors and fire alarms. Radio waves may affect electronic equipment and cause accidents due to malfunction.
- Do not disassemble, modify or attempt to repair the product to avoid electric shock, malfunction or fire.
- Do not subject the product to strong impact to avoid electric shock, malfunction or fire.
- Disconnect the product from a device if the product begins to malfunction, producing smoke, odor, heat, unwanted noise or showing other signs of damage.
In such a case, contact your local Audio-Technica dealer. - Do not put foreign matter such as combustible materials, metal, or liquid in the product.
- Do not cover the product with a cloth to avoid fire or injury by overheating.
- Follow applicable laws regarding mobile phone and headphone use if using headphones while driving.
- Do not use the product in places where the inability to hear ambient sound presents a serious risk (such as at railroad crossings, train stations, and construction sites).
- The product effectively shields external sound, so you may not hear the sound around you clearly while wearing the product.
Adjust the volume to a level where you can still hear background sound and monitor the area around you while listening to music. - Store the eartips out of the reach of small children.
- When charging, make sure to use the included USB charging cable.
- Do not charge with devices that have quick-charge functionality (with a voltage of 5 V or more). Doing so may cause the product to malfunction.
- To prevent damage to your hearing, do not raise the volume too high. Listening to loud sounds for an extended period may cause temporary or permanent hearing loss.
- Discontinue use if skin irritation results from direct contact with the product.
- If you begin to feel unwell while using the product, discontinue use immediately.
- When removing the product from your ears, check to make sure the ear tips are still attached to the main unit. If the ear tips become lodged in your ears and you are unable to remove them, consult a physician at once.
- If you develop an itch from wearing the product, discontinue use.
Cautions for rechargeable battery
The product is equipped with a rechargeable battery (lithium polymer battery).
- If battery fluid gets into eyes, do not rub them. Rinse thoroughly with clean water such as tap water and consult a doctor immediately.
- If battery fluid leaks, do not touch fluid with bare hands. If fluid remains inside the product, it may cause malfunction. If battery fluid leaks, contact your local Audio-Technica dealer.
– If fluid gets in your mouth, gargle thoroughly with clean water such as tap water and consult a doctor immediately.
– If your skin or clothing comes in contact with fluid, immediately wash the affected skin or clothing with water. If you experience skin irritation, consult a doctor. - To avoid leakage, generation of heat or explosion:
– Never heat, disassemble or modify the battery, nor dispose of it in a fire.
– Do not attempt to pierce with a nail, hit with a hammer or step on the battery.
– Do not drop the product or subject it to a strong impact.
– Do not get the battery wet. - Do not use, leave or store the battery in the following places:
– Area exposed to direct sunlight or high temperatures and humidity
– Inside of a car under the blazing sun
– Near heat sources such as heat registers - Charge only with the included USB cable to avoid malfunction or fire.
- The internal rechargeable battery of this product cannot be replaced by the user. The battery may have reached the end of its service life if the usage time becomes significantly shorter even after the battery has been fully charged. If this is the case, the battery needs to be repaired. Contact your local Audio-Technica dealer for repair details.
- When the product is disposed of, the built-in rechargeable battery needs to be discarded properly. Contact your local Audio-Technica dealer to learn how to properly dispose of the battery.
For customers in the USA
FCC Notice
Warning
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.
Caution
You are cautioned that any changes or modifications not expressly approved in this manual could void your authority to operate this equipment.
Note: 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 to 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.
RF Exposure Statement
This transmitter must not be co-located or operated in conjunction with any other antenna or transmitter used in other systems. This device complies with FCC radiation exposure limits set forth for an uncontrolled environment and meets the FCC radio frequency (RF) Exposure Guidelines. This equipment has very low levels of RF energy that is deemed to comply without testing of specific absorption rate (SAR).
For customers in Canada
IC statement
CAN ICES-3 (B)/NMB-3(B)
This device complies with INDUSTRY CANADA R.S.S. 247.
Operation is subject to the following conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including
interference which may cause undesired operation.
Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser) gain approved for the transmitter by Industry
Canada. To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for successful communication.
This device complies with RSS-102 radiation exposure limits set forth for an uncontrolled environment.
Notes on use
- Be sure to read the connected device’s user manual before use.
- Audio-Technica will not be liable in any way for any loss of data in the unlikely event that such losses should occur while using the product.
- On public transportation or in other public places, keep the volume low so as not to disturb other people.
- Minimize the volume on your device before connecting the product.
- When using the product in a dry environment, you may feel a tingling sensation in your ears.
This is caused by static electricity accumulated on your body, not by product malfunction. - Do not subject the product to a strong impact.
- Do not store the product in direct sunlight, near heating devices,or in hot, humid, or dusty places.
- When the product is used for a long time, the product may become discolored due to ultraviolet light (especially direct sunlight) and wear.
- Make sure to hold the plug when connecting and disconnecting the USB charging cable.
The USB charging cable may become severed or an accident may occur if you pull on the cable itself. - When you are not using the USB charging cable, disconnect it from the product.
- If the product is placed in a bag while the USB charging cable is still connected, the USB charging cable may become caught, severed, or broken.
- When you are not using the product, store it in the included case.
- This product can be used to talk on the phone only when using a mobile telephone network. Support for telephony apps that use a mobile data network is not guaranteed.
- If you use the product near an electronic device or transmitter (such as a mobile phone), unwanted noise may be heard. In this case, move the product away from the electronic device or transmitter.
- If you use the product near a TV or radio antenna, noise may be seen or heard in the television or radio signal. In this case, move the product away from the TV or radio antenna.
- To protect the built-in rechargeable battery, charge it at least once every 6 months. If too much time passes between charges, the life of the rechargeable battery may be reduced, or the rechargeable battery may no longer be able to be charged.
- When charging the product, keep it away from direct sunlight and charge in a well-ventilated place.
The battery may deteriorate and shorten the continuous usage time, or the battery may no longer be able to be charged. - Charging this product in wet conditions should be avoided. Doing so may result in malfunction.
- Do not bend the ear hanger more than necessary. Doing so may result in breakage.
- If the product will not be used for an extended period of time, store it in a well-ventilated place free from high temperatures and humidity.
- Do not leave the product inside of a car under the blazing sun. Doing so may result in malfunction.
- The hear-through mode of the product allows you to hear the sounds around you while wearing the product through the built-in microphone. Depending on the volume of the music being played back, the surrounding sounds may be difficult to hear. In this case, turn down the volume of the music.
- Depending on your surroundings, the surrounding sounds may be difficult to hear even when using the product’s hear-through mode. Do not use the product in places that are dangerous if you cannot hear the surrounding sounds, such as places with heavy traffic.
- Operate the touch sensor with one finger. Operating with a sharp-tipped object, such as a ballpoint pen or pencil, may result not only in incorrect operation but also damage to the touch sensor or breakage.
- Do not touch the touch sensor with your fingertips. Doing so may result in injury such as broken fingernails.
- If the product does not operate at all or as intended when touched, check to make sure that your other fingers, parts of your hand, or clothing hems are not in contact when touching. Also, the product may not operate correctly if you are wearing gloves or if your fingertips are dry.
- The product may not operate correctly if the touch sensor is dirty from sweat. Remove the dirt before operating the product.
Waterproof performance
- The waterproof performance of the product is designed to prevent the ingress of liquids from sweating during operation and simple washing (equivalent to IPX5).
- Although the product has waterproof capabilities equivalent to IPX5, there may be no sound or the sound may be difficult to hear if water enters the headphones because the part where the sound comes from is not water-resistant.
- The product is not completely waterproof. Do not intentionally submerge or use it in water.
Also, do not expose it to liquids other than sweat and water (such as soapy water). - If dirt such as sweat or sand adheres to the product, wash it with normal temperature (10 to 35 °C (50 to 95 °F)) freshwater or gentle-flowing tap water instead of soapy water. Do not directly expose the “part where the sound comes from” (not water-resistant) to water. For details, refer to “Cleaning” in the Operating Instructions, which can be downloaded from our homepage, to remove the dirt.
- The product is not designed to be dampproof. Do not use the product in environments with high humidity (such as bathrooms or saunas). Doing so may result in malfunction.
For a more comfortable Bluetooth® communication experience
The effective communication range of this product varies depending on obstructions and radio wave conditions.
For a more enjoyable experience, please use the product as close as possible to the Bluetooth device. To minimize noise and sound disruptions, avoid placing your body or other obstacles between the product’s antenna (L side) and the Bluetooth device.
Part names and functions
Accessories
 |
 |
 |
 |
| USB charging cable (30 cm (1′)) | Eartips*¹ (XS, S, M, L) | Comply™ foam eartips (M)*² | Case |
*1 At the time of purchase, the M-size ear tips are attached to the product.
*2 For details on how to use, clean, and replace Comply™ foam ear tips, refer to “About Comply™ foam ear tips” you can download from our Audio-Technica website.
Charging the battery
- Fully charge the battery when using it for the first time.
- When the rechargeable battery is running low, you will hear a beep from the headphones, and an indicator lamp will flash in red. When you hear this beep, charge the battery.
- It takes about 3 hours to charge the battery fully. (This time may vary depending on usage conditions.)
- While the battery is charging, the product’s Bluetooth connection remains disabled and therefore the product cannot be used.
- Connect the included USB charging cable (micro USB Type B side) to the battery jack.
•The included USB charging cable is designed for exclusive use with the product. Do not use other cables to charge the product.
•When inserting the USB charging cable into the USB port or battery jack, check that the jack is facing in the correct direction before inserting it directly (horizontally).
- Connect the included USB charging cable (USB Type-A side) to the computer to start charging.
• While charging, the indicator lamp lights as follows (it may take several seconds for the indicator lamp to light).
• Lit in red: Charging in progress
Off: Charging complete - When charging is complete, disconnect the USB charging cable (USB Type A side) from the computer.
- Disconnect the USB charging cable (Micro USB Type B side) from the battery jack.
Connecting via Bluetooth wireless technology
About pairing
To connect the product to a Bluetooth device, the product needs to pair (register) with the device. Once they are paired, you do not need to pair them again.
However, you need to pair again in the following cases:
- If the product is deleted from the Bluetooth device’s connection history.
- If the product is sent out for repair.
- If you try to pair nine devices or more. (This product can save pairing information on up to eight devices total. If you pair a new device after you have already paired eight devices, the pairing information of the device that was connected first among the eight devices will be overwritten by the new device’s information.)
Pairing a Bluetooth device
- Read the user manual for the Bluetooth device.
- Place the device within 1 m (3.3′) of the product to perform pairing correctly.
- To confirm the progress of the pairing process, wear the product while performing this procedure and listen for the confirmation tone.
- Starting with the product turned off, slide the power supply/control button to the “ON” position.
• The indicator lamp will light in blue, and then flash in red and blue. - Use your Bluetooth device to begin the pairing process and search for the product.
When your Bluetooth device finds the product, “ATH-SPORT70BT” will be displayed on the device.
• For information about using your Bluetooth device, refer to the device’s user manual. - Select “ATH-SPORT70BT” to pair the product and your Bluetooth device.
• Some devices may ask for a passkey. In this case, enter “0000”. The passkey may also be called a passcode, PIN code, PIN number, or password.
• The product sounds a confirmation tone when pairing is complete.
The product can use Bluetooth wireless technology to connect to your device and play music, receive phone calls, etc.
Use the product for whichever of these purposes suits your needs.
Note that Audio-Technica cannot guarantee the operation of displays, such as the battery level display, or applications via
Bluetooth devices.
Power supply ON/OFF
| Power
supply |
Power supply/control button operation | Indicator lamp | |
| ON | Press and hold |  |
Lights in blue then flash in red and blue* 1 *2 |
| OFF | Lights in red then turn off* 2 | ||
*1 It may take several seconds for the indicator lamp to light.
*2 For details, please refer to “Indicator lamp display” (p. 14).
Wearing the product
- Insert the side of the product marked “L” (left) into the left ear and the side marked “R” (right) into the right ear, and then adjust the ear tips and the ear hangers.
- You can freely adjust the shape of the ear hangers. Adjust them so that they fit your ears.
Using the product
Listening to audio
• To connect for the first time, pair the product and your device by Bluetooth wireless technology. If you have already paired the product and your Bluetooth device, turn on the Bluetooth device’s Bluetooth connection and turn on the product.
• Use your Bluetooth device to start playback, referring to the device’s user manual as necessary.
Power supply/control button
| Press | Play/pause | Plays or pauses music and video. *¹ |
Volume buttons
| + button | Press | Volume up | Increases the volume by 1 level. *² |
| Press and hold (for about 1 second) | Skip forward | Plays the next track. *¹ | |
| − button | Press | Volume down | Decreases the volume by 1 level. *² |
| Press and hold (for about 1 second) | Skip back | Plays the previous track. *¹ |
*1 Some controls may not be available for music and video playback on some devices.
*2 A confirmation tone is heard when the volume is at the maximum or minimum level.
- The volume control of some devices may not work well with the product.
Using hear-through mode
- In the hear-through mode of the product, the ambient sound is audible through the built-in microphone even with the headphones on.
- The ambient sound may at times be hard to discern depending on the volume of the music you are playing. In that case, turn down the volume of the music.
- Even in the hear-through mode of the product, the ambient sound may be less audible due to the ambient environment. Do not use the product in an area where it might be dangerous if the ambient sound is hard to discern, such as places with a lot of traffic.
- With the hear-through mode on, the volume of music automatically turns down to capture the ambient sound.
- If you turn the hear-through mode on or off when the volume is at the maximum or minimum level, the confirmation tone will sound repeatedly. This is not a product failure.
- The hear-through mode may not be activated at certain times, such as when you turn on the power of the product while touching the touch sensor, or when the usage environment is not agreeable. In these cases, cycle the power of the product, allowing more than five seconds between turning off and on.
To turn the hear-through mode on, touch the touch sensor located in the center of the left headphone (L).
– To turn it off, touch the touch sensor again.
– The confirmation tone will sound once when the hear-through mode turns on, and twice when it turns off.
Talking on the phone
- If your Bluetooth device supports telephone features, you can use the product to talk on the phone.
- When your Bluetooth device receives a phone call, the product’s ringtone sounds.
- If a call is received while you are listening to music, music playback is paused. When you finish the call, music playback resumes.*
| When | Operation | Function |
| Receiving a call | Press the power supply/control button. | Answers the call. |
| Press and hold the power supply/control button (for about 3 seconds). | Rejects the call. | |
| Talking on the phone |
Press the power supply/control button. | Ends the call. |
| Press the power supply/control button and the volume button (+). | Each time you press these buttons at the same time, you switch the call to your mobile phone or to the product. | |
| Press a volume button (+ or -). | Adjusts the volume (+ or -) of the call. |
* Depending on your Bluetooth device, music playback may not resume.
• These phone call controls may not be available on some smartphones.
Auto power-off function
The product automatically turns off after 5 minutes of not being connected to a device that has its power turned on.
Reset function
If the product does not work or other malfunctions occur, refer to “Charging the battery” (p. 6) for information on inserting the USB charging cable to provide power and then do a reset.
Disconnecting and then reconnecting the USB charging cable will reset the product and should resolve any problem you are experiencing. If the problem persists, please contact your local Audio-Technica dealer. Resetting the product does not change any of your settings (pairing information, volume setting, etc.).*
*The SBC priority connection (p. 14) is disconnected.
Get into the habit of regularly cleaning the product to ensure that it lasts for a long time. Do not use alcohol, paint thinners, or other solvents for cleaning purposes.
Main unit
- When cleaning the main unit, remove the eartips.
- If the product becomes soiled with sweat or dirt, wash it away with fresh water at room temperature (10 to 35 °C (50 to 95 °F)), or weak running water, instead of using soapy water.
- Position the product so that the outer surface is facing the water flow (see figure below), and avoid pouring water directly on the sound reproduction part, which is not water-resistant.
- Be sure to wash the product with your hands instead of using a brush or sponge.
- This product is waterproof to the IPX5 level, but the sound reproduction part is not water-resistant. Infiltration of water into the inside of headphones may cause the product to make no sound or make the sound hard to hear.
- Natural oils from the skin are particularly likely to build upon the areas where the ear tips attach to the headphones (see figure below). If these areas are not cleaned, the ear tips can become detached. Clean them regularly. Do not touch the areas where sound is produced as they are delicate. Doing so may result in malfunction.
After washing, wipe the product clean following the steps listed below:
- Wipe off the water from the surfaces with a dry, clean cloth.
- Hold the product firmly, and shake off the water about 20 times until no drops of water sprinkle off.
• Moisture left in the sound reproduction part and microphones may cause the product to make no sound. If that is the case, lay out a dry cloth and shake both the sound reproduction part and the microphones downward toward the cloth about 20 times each. - If water is left in a space between the sound reproduction part and microphone, press a dry, clean and soft cloth gently to the product to wipe off the moisture.
- Dry them thoroughly in the well-ventilated shade.
• Do not apply hot air from a dryer directly onto the product.
• Do not use a cotton swab to forcibly wipe off the moisture left in a space between the parts of the product.
Cable and ear tips
- Wipe away any perspiration or dirt from the cable with a dry cloth immediately after use. Failure to clean the cable may cause it to deteriorate and harden over time, resulting in malfunction.
- Wipe the cable’s USB plug with a dry cloth if dirty.
- Clean the ear tips by removing them from the headphones and manually cleaning them with a diluted mild detergent.
After cleaning, dry before using again. - If the product will not be used for an extended period of time, store it in a well-ventilated place free from high temperatures and humidity.
Eartips
Eartip size
The product includes eartips in 4 sizes (XS, S, M, and L), and Comply™ foam ear tips (size M). At the time of purchase, the M-size ear tips are attached. To ensure the best sound quality, select the ear tip size that is best suited for you, and adjust the ear tips inside your ears for a snug fit. It may be difficult to hear bass sounds if the ear tips do not fit snugly in your ears.
Replacing the eartips
Remove the old eartip and attach the new eartip by pushing it onto the headphone at an angle (see figure).
Push firmly on the eartip so that the inside of the eartip expands, and push the eartip onto the post as far as it will go.
- The eartips are designed to be difficult to remove, therefore the fit is very tight when attaching them.
- Periodically remove and clean the eartips as they become dirty easily. Using dirty eartips may cause the headphones themselves to become dirty, resulting in deteriorated sound quality.
- Eartips are consumable parts that degrade through storage and use. If the eartips are loose and easily removed or if they appear to have degraded, purchase replacements.
- When reattaching eartips that were previously removed, be sure to check that they are securely attached. Injury or illness may occur if the eartips become detached and are left inside the ear.
Troubleshooting
| Problem | Solution |
| Power is not supplied. |
|
| Unable to pair. |
|
| No sound is heard / Sound is faint. |
|
| Sound is distorted / Noise is heard / Sound cuts out. |
|
| Cannot hear the voice of the caller / Voice of the caller is too quiet. |
|
| The product cannot be charged. |
|
| Sound is delayed (video and audio are out of sync). |
|
| Hear-through mode does not work |
|
- For details about how to operate your Bluetooth device, refer to the device’s user manual.
- If the problem still remains, reset the product. To reset the product, refer to “Reset function” (p. 10) in “Using the product”.
Troubleshooting
SBC priority connections (for when sound is delayed significantly)
When the connection codec is AAC, significant sound delays can be alleviated by changing the connection codec to SBC, which comes standard with Bluetooth devices.*¹
Connecting to a SBC priority connection
When the pairing with a Bluetooth device has been completed
- Disconnect the communications with the Bluetooth device, and keep the product from connecting via Bluetooth.
- Turn the product power to “ON”.
- With the indicator lamp showing the searching for device status, press and hold the + and – volume buttons simultaneously (for about 1 second).
• The indicator lamp will flash in purple. - Resume communication with the Bluetooth device while the indicator lamp is flashing in purple.
• If the indicator lamp changes to flashing three times in blue, the settings are complete.
Before pairing with a Bluetooth device
- Turn the product power to “ON”.
- With the indicator lamp showing the searching for device status, press and hold the + and – volume buttons
simultaneously (for about 1 second).
• The indicator lamp will flash in purple. - With the indicator lamp flashing in purple, refer to steps 2 and 3 of “Pairing a Bluetooth device” (p. 7) to perform the
pairing operation. - If the indicator lamp changes to flashing three times in blue, the settings are complete.
- After pairing via an SBC priority connection is complete, the only available connection codec will be SBC.
Connections using other codecs will not be possible.*² - For details on the flashing and lit displays of the indicator lamp, refer to the “Indicator lamp display” below.
*1 Depending on the usage environment, changing to an SBC priority connection may not alleviate sound delays.
*2 Turning the power off and then turning it back on will result in a return to a normal connection and enable connections using other codecs. Please connect using an SBC priority connection when necessary.
Indicator lamp display
The indicator lamp of the product indicates the product’s status as explained below.
| Status | Indicator lamp display pattern  |
||
| Pairing | Searching for device |  |
Flashing |
| Searching for the device (when using an SBC priority connection) |  |
||
| Connection | Connecting |  |
|
| Connecting (when using an SBC priority connection) |  |
||
| level | Battery ry level low | The blue indicator lamp for the pairing and connecting statuses changes to a red indicator lamp. | |
| Charge | Charging |  |
Lit |
| Fully charged |  |
Off | |
Specifications
| Headphones | |
| Type | Dynamic |
| Driver | 9 mm |
| Sensitivity | 93 dB/mW |
| Frequency response | 20 to 20,000 Hz |
| Impedance | 16 ohms |
| Microphone | |
| Type | Electret condenser |
| Polar pattern | Omnidirectional |
| Sensitivity | -42 dB (1 V/Pa, at 1 kHz) |
| Frequency response | 50 to 8,000 Hz |
| Communication specifications | |
| Communication system | Bluetooth version 4.1 |
| RF output | 6 mW EIRP |
| Maximum communication range | Line of sight – approx. 10 m (33′) |
| Frequency band | 2.402 GHz to 2.480 GHz |
| Modulation method | FHSS |
| Compatible Bluetooth profiles | A2DP, AVRCP, HFP, HSP |
| Support codec | AAC, SBC |
| Supported content protection method Transmission band | SCMS-T |
| 20 to 20,000 Hz | |
| Other | |
| Power supply | DC 3.7 V lithium-polymer battery |
| Charging time | Approx. 3 hours*¹ |
| Operating time | Continuous transmission time (music playback): Max. approx. 6 hours*¹*² Continuous standby time: Max. approx. 14 hours*¹ |
| Weight | 28.5 g (1.0 oz) |
| Operating temperature | 5 °C to 40 °C (41 °F to 104 °F) |
| Accessories |
|
| Sold separately |
|
*1 The time may vary depending on usage conditions.
*2 Playing time is the same in the hear-through mode.
For product improvement, the product is subject to modification without notice.
- The Bluetooth® word mark and logos are owned by Bluetooth SIG, Inc. and any use of such marks by Audio-Technica Corporation is under license. All other trademarks are property of their respective owners.
- The “AAC” logo is a trademark of Dolby Laboratories.
Audio-Technica Corporation
2-46-1 Nishi-naruse, Machida, Tokyo 194-8666, Japan
www.audio-technica.co.jp
©2018 Audio-Technica Corporation
138900980-02-01 ver.1 2018.01.15
