Talk and listen conveniently and clearly. Enjoy hands-free communication when The Motorola Talkabout Headset with Swivel Boom Microphone is used with Voice Activated Transmission (VOX) capable Motorola Talkabout radios. The headset allows you to hear messages clearly in high noise areas or in quiet environments without disturbing others. The boom microphone rejects most road noise, and soon becomes forgotten in the course of routine use. You’ll have the flexibility to transmit messages without removing the radio from your belt or carrying case. Good news cyclists - the band actually fits OVER a safety helmet. The closed-foam-cell rubber pad grips the plastic shell securely. It doesn't use batteries and it doesn't cost a lot. Compatible with MS, EM, FV500, FV600, FV700, FV800, MH, MJ, MR, SX500, SX600, SX700, SX800, SX900, T5420, T5500, T5710, T5720, T5800, T5900, T6200, T6300, T6400, T6500, T7100, T7200, T7400, T8500, T9500, T9600 series.