Bluetooth protocol: A2DP AVRCP HFP HSP

Battery: 3.7 V 60mAh

Charging power: 5V/80 mAh

Sensitivity: 103 dB +/- 3 dB

Impedance: 32 MW

Transmission distance: 10 m barrier-free

Frequency: 2.4 GHZ

Talk time: about 4 hours

Listening to song time: about 5 hours

Standby time: about 160 hours