1. Bluetooth V2.1 + EDR wireless transmission protocol

2.Transmission distance and range(10m，  360°)

3. High SNR Bluetooth audio connection

4. Bluetooth stereo headphones with built-in microphone

5. Automatic Switch-over between calls and music

6. Advanced DSP noise reduction technology

7. Low power indicater， power status can be showed in cellphone after connected via bluetooth

8. Comfortable ear cushions and adjustable headband

9. Headset Spec.: frequency response:20-20KHz，SNR:92dB，working Voltage:3.7V，current:30mA                     speaker size:30mm  Rechargeable:300mah Li-polymer battery

10. Microphone Spec.:100Hz~10kHz&SRN≥74dB&Sensitivity:-66dB

11.Recording: OFF / ON (default setting)

12.Talk Time: ≥ 9 Hours;Music Time: ≥ 8Hours;Standby Time: ≥ 230 Hours;Charge Time: ≤ 2.5 Hours

13. Avaliable color: black， white， red， blue， pink， orange