Hisonic HS707 Portable Battery Powered VHF La Valier and Headset Wireless Microphone System Portable Single Channel Wireless Microphone with one Lapel Mic and One Headset Mic, Hisonic HS707 Hi-Fi sound quality and long range transmisson up to 150 feet Wide frequency response with low harmonic distortion Ideal for Camcording 90 days money back guarantee and 1 year manufacturer's warranty