The American Audio WM-219 is a 2-channel UHF wireless microphone system that includes two wireless microphones, two different colour 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 sight) and each microphone has 6-10 hour battery life.