The American Audio WM-219 is a 2-channel UHF wireless microphone system that includes two wireless microphones, two different color coded rings (to differentiate each microphone) and a wireless receiver with individual volume control and audio input for each microphone. The WM-219 is designed for use in PA, karaoke, mobile entertainers, schools and houses of worship. It has a wireless range of 300 feet / 90M (line of site) and each microphone has 6-10 hour battery life. UHF Dual Receiver Handheld Wireless Mic system. Dual Easyview displays. 100 Channels per receiver. FSS Smart Scan searches for the best open frequencies. 2 detachable UHF antennas. Front or rear mount (includes BNC antenna cables). 19” Rackmount receiver. 2 handheld transmitters with “aQuevoice” capsules. Frequency Range: UHF 863-865MHz.