HD Sound Quality: The UHF wireless mic is built in a professional chipset to effectively capture the real voice and produce clear smooth and crisp sound. With cardioid pick-up pattern, this mic captures sound accurately and suppresses unwanted background noise/hissing. Ideal for karaoke, Home KTV, big party, church, weddings, speech, class use, conference and outdoor events. Stable Signal: VW-022 adopts UHF wireless design for the more stable signal and longer working distance up to 200ft. Besides, there are 15 adjustable frequencies, and it supports 15 sets to work together without any interference.