Check the listing for details. 2 Channel Dynamic Handheld Microphone Wireless UHF Microphones System Metal Mic. Color: Black, Condition: New. Listed at 169.87 USD. STARAUDIO SMU-0223A Stable Transfering☆ 540-585MHz UHF, compliant with the American rules.wireless UHF microphone Features band,less interference than the traditional VHF band,transmission more reliable; DPLL digital phase-locked loop multi-channel frequency synthesis technology,in the 50MHZ frequency bandwidth, to 250KHz channel Interval,providing up to 200 channel options to facilitate the use of multiple sets of machines at the same time,easily avoid all kinds of interference. Advanced automatic frequency technology, even if the transmitter and receiver frequency of the chaos,you just gently press, hair The machine will automatically chase the receiver frequency and adjust the same,easy to use; Ad hoc high and low power switching function, so that you not only in meetings and others.