Fitness Audio UHF Series - the best built fitness wireless microphone system hands down. The simplified clean design takes a beating and keeps on delivering. Transmitter circuit boards are coated with a marine grade sealer for additional sweat protection as well as the elimination of an external transmitter antenna (both Fitness Audio exclusives). 16 Channel UHF for those crowded RF markets where VHF is less reliable as well as the ability to offer one extra transmitter as a club back-up that will work with any of the Fitness Audio UHF Series systems in the facility. This system has been sold world wide to many happy facility directors.