Product details:
1. Bluetooth 5.0 solution,MICRO USB charging,
2, Support for all Bluetooth devices and mobile phones,
3, connect two mobile phones at the same time,
4,A2DP, support music playback, English and Chinese voice prompt,
5, low power consumption, long standby
6. Receive and hang up the phone, reject the call, dial back the end code

Style details:
Black is V9 (no digital display)
Bluetooth 5.0 V9S (with digital display)

BlackA, RedA, and BlueA are V10

Packing list:
Earphone *1