UHF wireless microphone system, features: PLL system with multi-channel receiver with a head mic, clip-mic and built-in ACT system. Designed for: Vocalists & singers, Public speakers, Musicals & theatre and Street performers. Receiver: Uses future proof frequencies, UHF 863.00 - 865.00 MHz frequency band, Auto frequency scanning, SMT technology, Preset 16 channel PLL system, Ideal working distance is up to 30 metres.