1.Driver: 8 mm environment friendly black magnetic design, phonetalking is much clearer.

2.Impedance???16 OHM

3.Bluetooth Version???Bluetooth V3.0 HS

4.Power level???CLASS II

5.Output power???20mW  THD N=1???

6.Bluetooth distance???W/O obstacles≤10M

7.Audio frequency response???80HZ-20KHz, Bluetooth frequencyrange: 2.402-2.480GHz.

8.Working voltage range???3.0V-3.7V

9.Sensitivity: -86 dB  0.1???

10. Microphone Sensitivity???-45±3dB

11. It’s with A2DP/AVRCP high quality stereo audiotransmission and remote control protocol.

12.  Battery Indicator: Red light is on during charging,blue light is on after complete charging.