You are bidding on one like-new Lectrosonics REFUM UHF wireless microphone system operating on Block 24.  The system consists of a belt-pack transmitter, a belt-mounted "mute" switch, and a connecting cable as well as a protective cloth case.  It does NOT include a microphone.From Lectrosonics:The REFUM belt-pack referee system offers sports officials the latest digital/analog hybrid technology in a convenient, weather-resistant package. Using the REFSWITCH external belt-pack switch assembly, the audio in the REFUM transmitter can be muted or engaged, without pops or clicks in the audio. A 5-pin input jack provides taps for low impedance dynamic mics, electret lavalier mics (positive or negative bias) and a pin designated for audio muting using an external switch. Input gain is adjustable over a 43 range to perfectly match the audio input