1:  Bluetooth 2.1 wireless transmission protocol                                                        
2:  Transmission distance and range(10m,  360°)                                                    
3:  High SNR Bluetooth audio connection
4:  No wire,no transmitter,no software,no setup, it is easy and fast. 
5:  Automatic Switch-over between calls and music  
6:  Hidden omni-directional Mircrophone                                                                  
7:  Low power indicater
8:  Adjustable headband and folded
9:  Working duration:15h,charging duration:4h
10: Headset Spec.: frequency response:20-20KHz,SRN:85dB,working Voltage:3.7V,current:30mA speaker size:Φ40mm
11: Microphone Spec.:100Hz~10kHz&SRN≥55dB&Sensitivity:-42dB