Technical Specifications:

Channel: 2 * 100

Frequency Response: 40-18000Hz

Distortion:≤0.5% 

SNR:≥110dB

Frequency range:640-690MHZ

Frequency stability:± 10ppm

Receving system: Secondary superheterodyne frequency conversion

receving senstivity:-95-67dBm

Audio output: balance output and mix output

Transmitted power:3-30mW

Modulation Mode:FM

Battery:two NO.5 battery

Power comsumption:≤10W