1.Bluetooth version:V4.2
2.Chip Model:WT200-s
3.Signal Distance:10M
4.Frequency Response:20Hz-20KHz
5.Sensitivity:105dB±3dB
6.Impedance: 32±5% Ω
7.Max Output power:20mW
8.Working time:8H
9.Talking time:8H
10.Standy time:120H
11.Battery Model:110mAh