Samson's AirLine 88 AH8 Fitness 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 AH8 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 Fitness 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.