The only compact transmitter designed and built for fitness.  Versatility - best describes this system - Built onto the ultimate headset mic for aerobics instruction, the Aeromic.  Specially designed O’ring seals, marine grade varnish on the circuit board, sealed push button ‘on/off’ switch - sets this transmitter in a class by itself for fitness use.  An 8 channel frequency agile transmitter and receiver combo give you the flexibility to operate in the toughest wireless areas.  Check-out the features below.  Completely free from the belt pack, but still guaranteed to perform for 50 classes per week.