Specifications：

 Oscillator type: PLL Synthesized Control Oscillator
 Carrier Frequency Range: 556.71 MHz-575.98 MHz (Transmitter: A )
 576.39 MHz-595.66MHz (Transmitter: B )
 Channels: 48
 Frequency response: 40 Hz to 18 kHz (+/-3dB)
 Operation range: 100m (300')(without obstacle)
 

 Antenna: 1/4λ wire antenna
 Audio input connector: 3.5mm mini jack
 Signal to noise ratio 70dB or more
 Distortion: 0.5% or less
 Headphone output level: 30mW(16Ω)
 Audio output level: -60dBV
 Power supply Two AA size batteries
 Operation time: About 4 hours
 Dimensions:
208(H) × 67(W) × 29(L)mm

Weight: 90g without batteries