Samson AirLine 77 AH7 Wireless Fitness Headset Microphone System (K3: 492.425 MHz)

Up to 300' (90m) operating range (line-of-sight) Available in multiple channels (region dependent) Samson AirLine 77 AH7 Wireless System Fitness Headset (Channel K3)You may also like Samson XP106W Portable Full Performer Package with Speaker and Microphone Stand.