Sena 30K / 20S / EVO Helmet Clamp Kit For Harley CB / Audio Pairing old school with the new age, the Sena Technologies CB radio clamp kit brings your CB radio to your headset while still benefiting from all the great features your bluetooth system has to offer. The adapter cable with multi-pin DIN plug connects the onboard audio system with the helmet clamp and allows users to listen to the onboard audio system, including FM radio and GPS navigation. The CB radio retains full functionality with the use of the integrated PTT switch/button and clamp kit microphone. Features For use with Harley Davidson models equipped with CB radios CB radio specific clamp kit Speakers Wired Microphone Boom Microphone Speaker adhesives 7 pin Din connector