Samson's AirLine 88 Headset system offers true wireless freedom without the hassle of a beltpack or cable. Featuring a lightweight, water-resistant micro transmitter headset with a secure yet comfortable fit, this frequency-agile UHF wireless system provides high definition sound, premium reliability and a 300' operating range for fitness instructors and active performers. Building on the legacy of the world's first cable-free wireless system (Samson's AirLine 77), the AirLine 88 Headset combines a micro transmitter and adjustable gooseneck into a low profile headset that molds to the shape of your head. Other great features of the AH8 Headset Transmitter include an internal 8-hour rechargeable lithium ion battery, easily accessible Gain and Mute controls, and IR sync to wirelessly match the receiver and transmitter frequency. Designed with Yoga, Pilates, Zumba and cycling instructors in mind, the system's headset features water-resistant components, including a marine-grade stainless steel gooseneck, sealed circuit board and AE50X micro-miniature microphone capsule. The capsule's cardioid pickup pattern prevents feedback and other unwanted noise from affecting a performance. Offering frequency-agile operation, the system's rack mountable CR88 Wireless Receiver provides 16 selectable channels for reliable performance no matter where you are. The receiver's True Diversity design minimizes dropouts, while tone key technology prevents unwanted noise when your transmitter is off or out of range. For classes with more than one instructor or facilities with multiple studios, up to eight systems per frequency band can be used simultaneously.