Bluetooth Stereo Noise-cancelling Headset for cell phone PC Headphone 

SPECIFICATIONS：
1) Cuts up to ninety-two percent of low- frequency noise indoors,and outdoors,even in windy conditions.
2) Reduced noise eliminates need for higher audio volume, helping to protect hearing.
3) Perfect audio quality from high-power forty-millimeter , neodymium driver and frequency response equilibrium technology
4) Connects to music and video players, laptops, game consoles and in-flight audio systems.
5) Lower power usage extends battery life for up to forty hours.

Features
1. Frequency Range: 20Hz ~ 20KHz
2. Impedance: 32
3. Sensitivity: 94dB/Mw
4. S/N ratio: 94dB
5. Weight: 246g
6. Battery operating time: 30Hours
7.Apply areas and media:Air craft, Subway or MRT, Vehicle, Public area, and living room,Cell phone, Computer, MP3 player