STARAUDIO Pro 4 Channel Wireless UHF Microphone System With Diversity 4CH Handheld Mics For DJ Stage Church,Karaoke KTV Church,Wedding Party,Club School Play,Speech Outdoor Indoor PA DJ Mic SMU4000A Pro 4CH UHF DJ Stage Church Club Karaoke Wireless Handheld Microphone System Digital L.E.D Display,High Quality Wireless UHF Receiver with 4 Antennas Individual Channel Volume Controls Dynamic Handheld System:150 Feet Frequency Range: 500-585MHz Fixed