Bluetooth version 5.3 (AD6973D4)
Supported protocols: HSP, HFP, A2DP, AVRCP
Channel system: Stereo
Battery capacity of earbuds: 35mAh*2(without protection board but IC)
Battery capacity of charging case: 3.7V/300mAh(with protective plate)
Diameter of horn: 13mm
Charging time 1h Talk time 7h
Play time: 6h (Used with charging case under 80% volume: 20h)
Standby time: 200h
Sensitivity 93±3dB
Impedance: 32Ω
Input standard voltage: DC 5V
Frequency response range: 2.402GHz~2.480GHz
Maximum transmission distance: 10m