You can learn all about the TOZO NC2 Hybrid Wireless earbuds using this handy manual. It contains sections that teach you how to connect them using Bluetooth to your smart device and for choosing the right size to fit into your ear.
NC2 TWS ANC EARBUDS
Auto Power ON/OFF
Open the cover of the charging box, the earbuds will power on automatically.
Auto power off
Put the earbuds Into the charging box, close the cover, and the earbuds will power off automatically.