Bluetooth version: Bluetooth 5.1
Chip: Jieli 6963d
Bluetooth protocol: A2 DP.AVRCP.HFP .HSP
Effective distance: 20 meters (without obstacles)
Charging time: 1 hour for headset
Charging box 2.5h
Charging input of charging box: dc5.0v = 400mA
Charging box output: dc5.0v = 70ma (single headset)
Battery capacity of charging box: 400mah charge the headset 2-3 times
Battery capacity of headset: 40mAh * 2 (50mA available)
Music duration (normal volume): about 5-6hrs
Call duration: more than 6 hours
Total working time with charging box: 25-35 hours
Impedance: 16 ohms
Mode: two ear mode and single ear mode
Single or double ears: double stereo (can be used separately)
Function: support music / voice prompt / call / listen to e-book