Samson's AHX Fitness Headset system offers frequency-agile UHF wireless freedom via the world's smallest clip-on transmitter, which places high definition sound, an internal rechargeable battery, and 300' of reliable performance in a device that fits in the palm of your hand. It also features a water-resistant condenser microphone and double ear headset ideal for fitness instructors and other high-energy performers. The AHX Fitness Headset system continues Samson's longstanding commitment to wireless innovation with the world's smallest clip-on transmitter… The ATX Wireless Micro Transmitter clips directly to your belt or waistband, allowing you to you rule the stage with confidence. It provides infrared sync to wirelessly match the receiver and transmitter frequency, easily accessible Gain and Mute controls, a battery life LED indicator and an 8-hour rechargeable lithium-ion battery. The ATX transmitter features a Qe condenser microphone with a unidirectional cardioid pickup pattern. The Qe is also water-resistant, making it idea for group fitness instructors and other applications where perspiration is a concern. The Qe comes with a durabel, double ear headset that is designed to remain in place despite repetitious movement, as well as a windscreen for reducing occurrences of popping and wind noise. Offering frequency-agile operation, the system's rack mountable CR99 Wireless Receiver provides 80 selectable channels for reliable performance no matter where you are. The receiver's True RF Diversity design minimizes dropouts, while tone key technology prevents unwanted noise when your transmitter is off or out of range.