abcGoodefg Full Face Moto Motorcycle Bike Helmet Earpiece Headset Mic Microphone For Kenwood Two Way Radio Walkie Talkie Lt-2288 Lt-3107 Lt-3188 Lt-3260 Lt-3268 TK-3230 TK-340 TK3230K TK3230 Full Face Moto Motorcycle Bike Helmet Earpiece Headset Mic Microphone for Kenwood Wouxun Puxing Radio Security Door Supervisor 2pin Designed to work with moto/bike racing helmet. Noise cancelling with boom mic microphone. Dual speakers with sticker, can be pasted to inside of the helmet. PTT button with velcro which can be fixed to handlebar is convenient to use.