Pyle 4 Channel UHF Wireless Microphone System & Rack Mountable Base 4 Headsets, 4 Belt Packs, 4 Lavelier/Lapel MIC With Independent Volume Controls AF & RF Signal Indicators (PDWM4560) WIRELESS - Enjoy a cable-free environment & make it easy to own the stage without getting tangled up! The ultimate in freedom during vocal performances for professional on-stage singers & performers with PYLE wireless microphone system. ASSORTED MICS - 4 body-pack transmitters to clip comfortably on any garment for use with included headset/lapel microphones. This system allows you to sing, talk or vocalize, leaving hands free to play any instrument. UHF - Wireless UHF band signal audio transmission provides unsurpassed performance with operation up to 160 FT for clear, noise & distortion free, crisp vocals & excellent sound reproduction. Great for conferences, broadcasting & social events. RACK MOUNT RECEIVER - Universal removable rack-mountable receiver base design with rotating removable dual antennas, independent channel volume controls, 4 XLR balanced output, mixed 1/4'' unbalanced audio output & universal 110/240 Voltage. HIGH QUALITY- Wireless headsets & ultra-low profile lapel/lavalier MIC's designed for extended comfortable wear providing excellent audio quality with its omni-directional audio capture and projection of the subject.