NO BELT PACK. FITNESS-RATED DURABILITY.Transmitter and headset only. Built for fitness (up to 7 fitness classes per day) with a single SEALED on/off switch, coated circuit board, NO BELT-WORN TRANSMITTER. 8 channel selectable for those cities that have crowded airwaves or for facilities that want to have a single transmitter as a spare. The simplified, clean design takes a beating and keeps on delivering. The newest phase of fitness microphones has arrived. Completely free from the belt pack, but still guaranteed to perform for up to 7 fitness classes per day. Product highlights: 8-channel frequency-agile UHF system Coated circuit boards - to protect against sweat Sealed single push button ‘ON/OFF’ switch on the transmitter Single AAA battery transmitter operation Tone-coded transmission - eliminates spurious emissions and ‘on/off’ pop noise and the need for ‘mute’ switch on the transmitter. 5 Frequency groups to choose from - all FCC Compliant Completely free from the belt pack Guaranteed to perform for up to 7 fitness classes per day Warranty: 2 Years Headset, 1 Year Wireless Components Aeromic User Manual Transmitter's User Manual Watch the video included on this product page for more tips on how to wear your Fitness Audio UHF Mini-TX Aeromic. Includes the headset and transmitter only, and please double-check your frequency requirements before ordering. If you are unsure of your frequency group contact us today via Live Chat, email or call 800-491-6874, M-F 8:00 - 4 pm PST. We're here to help.*Your transmitter will need to match the frequency of your receiver. - If the dial is set to 0 through 8 (the red side) you need A- If the dial is set to 9-F (the blue side) you need B- Receiver sold separately Product DetailsHeadset and transmitter only, please double-check your frequency requirements before ordering. 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 gives you the flexibility to operate in the toughest wireless areas. The simplified, clean Mini-Tx design takes a beating and keeps on delivering. Over three years in development, Fitness Audio got this NO BODY-PACK system right. Video