Tws earphone with Power Bank

Bluetooth version V5.0+EDR
Power Input 3.2V-4.2V
Output 30mW
Power 74mW
Earphone battery 50mAh per single,add protect board
Charging box battery 420mAh,add protect board
Charging power earphone 5V/1mA, charging box 5V/1mA
Transmission distance 10m
Frequency 2.4GHz-2.48GHz
Capacity: 1800mah