Description:

- Model: M19

- Bluetooth specification: V5.1

- Bluetooth Profile: A2DP,AVRCP, HFP;HSP

- Working voltage: 3.1V~4.2V

- Charging voltage: 5V-1A

- Battery capacity of the headset: 50MAH

- Battery capacity of the storage box: 2000MAH

- Transmission distance: >10M