TV wireless Headphone with Radio & Microphone /hot headphone

for TV, DVD and PC use,it also can be used as a portable FM radio with auto-tuning function, the on the transmitter can be used to chat online without any cord. Cordless headphone

Wireless earphones for TV, DVD, and PC use.
Built-in microphone for free Internet talking.
Can be wired as stereo headphone.
Two independent receiving bands for headphone and radio.
Can be used as a portable FM radio with auto-tuning function.
Operation distance: 30 meters (360 degree).
S/N ratio: more than 50dB.

Power supply
Transmitter: 3V DC (2 x 1.5V AAA batteries).
Receiver: 2 x 1.5V AAA batteries.

1.Receive frequency :FM:Hfile(wireless headphone):　78-88MHZ

Rfile (fm broadcast):88-108MHZ

2.Emission frequency:82MHZ,81MHZ,83MHZ(color mark distinguish)

Sensitivity:FM≤20μvAF≥10m

3.S/N Ratio:>50dB

4.Emission distance:>30m(open place )

5.Distortion