VHF Wireless Headphone with Radio (GH-790)

Model No.: YH-790 
Features:
1) VHF/RF wireless headphone
2) The antenna of receiver and transmitter is built inside
3) Two independent receiving bands for wireless headphone and FM radio
4) Can be used as a portable FM radio with auto-tuning function
5) Talk on internet with wireless headphone
Specifications:
1) System: VHF/RF
2) Modulation: frequency modulation (FM)
3) Audio mode: mono
4) Operation distance: up to;30 meters (360?
5) Transmission frequency: 85.8MHz
6) Receiving frequency: 85 ~ 108MHz
7) S/N ratio: >50dB
8) Distortion: <2%THD
9) Frequency response: 30 ~ 20,000Hz
10) Power supply:  
a) Transmitter: DC 3V (2 x 1.5V AAA batteries)  
b) Receiver: DC 3V (2 x 1.5V AAA batteries)
Inner packing: Dimensions: 20.5 x 20.5 x 9.0cm