Driver Unit: ø6*2
Frequency Response:20-20KHz 
Impedance:16Ω±15% at 1KHz
Sensitivity:95±3dB at 1KHz 1mW
THD:≤3% at 1KHz 
Max Input Power:5mW
Bluetooth ver.: V5.0
Chip:Reatek-RTL8763BRC
Working time:Around 4 hrs
Standby time:Around 80 hrs   
Charging connector:TYPE-C
Charging time:Around 1.5 hrs