TX transmitter Channels: 96 Group A Wireless Frequency: 520.000MHz ~ 548.500MHz Group B Wireless Frequency: 550.000MHz ~ 578.500MHz < / p> Signal / noise: & gt; 65dB Antenna: 1/4 wavelength wire antenna Transmit Power: 10dbm / 15dbm Spurious radiation: & lt; -60dBc Sound delay: & lt; 20ms Audio distortion: & lt; 0.5% Battery: 3.7V 2000mAh polymer lithium battery Size: 84 x 63.5 x 23mm < / p> RX receiver Channels: 96 Group A Wireless Frequency: 520.000MHz ~ 548.500MHz Group B wireless frequency: 550.000 MHz ~ 578.500 MHz Signal / noise: & gt; 65dB Antenna: 1/4 wavelength wire antenna Receiving power: -95dBm Stray radiation: & lt; -60dBc Sound delay: & lt; 20ms Audio distortion: & lt; 0.5% Battery: 3.7V 2000mAh polymer lithium battery Size: 84 x 63.5 x 23mm