Receiver:; Dual frequency design (Channel A/B); Broad frequency response & low distortion; LED status indicators; Dual independent channel antennas; On/off power switch; Channel freq: 109MHz-113MHz; RF sensitivity: 20dBm; Signal-to-noise ratio: 50dB; Freq resp: 50Hz-15kHz; Audio output level: 10mV; Power supply type: 9V DC/AC 110V or 220V;Transmitter:; Carrier freq: 109MHz-113MHz; Transmit output power: 10mW; Signal-to-noise ratio: 75dB; Modulation mode: FM; Max deviation: 30kHz; 3V battery; Includes 2 handheld microphones;