Wireless System - Frequency K6This item is temporarily out of stock. Please bookmark this page and check back later or contact us for a possible ETA.The Samson AirLine 77 AH7 Fitness Headset system is a wireless microphone solution designed to meet the specific demands of fitness instructors and active performers. With the unique AH7 micro transmitter mounted to a sweat-resistant Qe fitness headset microphone, you can free yourself completely from cables and beltpacks for a truly exhilarating and motivating experience. This allows you to focus