Check the listing for details. Samson AirLine 99m AH9 Wireless Fitness Headset System - K Band. Condition: New. Listed at 499.99 USD. Simple and Reliable Fitness Headset System From fitness instructors to energetic performers, the Samson AirLine 99m AH9 fitness headset system brings reliable wireless to a wide range of applications. This simple yet reliable UHF wireless system offers the kind of benefits fitness performers look for in a headset like this: water and sweat resistance, frequency-agile operation, and easy set up. The Qe headset microphone includes the transmitter, so there’s no bodypack to worry about, and it runs for up to eight hours on a single charge. You can run eight AirLine 99m AH9 systems at a time, and with 300' to roam, you’ll never feel tied down.Water-resistant Qe headset microphone It’s not a wireless system without a microphone.