SystemDual channel system for simultaneous operation of two transmittersAvailable on two selected frequencies in the VHF high band (171-216 MHz)for interference-free, long-range performanceProprietary companding circuitry for an industry-best 120dB Dynamic Range,and the clearest, most natural sound availableOperating Range: Up to 250 feet typical (depending on site conditions)up to 500+ feet line-of-sightNoise-free transmitter ON/OFF operationRugged, foam-padded traveling case provides easy, saf