Detailed Product Description

Wireless Stereo headphone,wired headphone,wireless headphone,FM radio receiver,wireless chat online (optional),
Transimitter:
1) frequency: 84MHz
2) modulation mode: FM
3) transmission range: 30 meters
4) power supply: 2xAAA batteries.

Receiver (headphone):
1) frequency range: 83-108MHz
2) reception mode:FM  
3) frequency response: 20-20000Hz
4) distortion: <=2%
5) power supply: 2*AAA batteries.