Features Bluetooth 3.0 Bluetooth intercom up to 400 meters (430 yards)* Multi-pair Bluetooth intercom Voice prompts Bluetooth stereo headset by A2DP Bluetooth music playback control by AVRCP: Play, pause, track forward and track back Easy operation by versatile Jog Dial (Patent pending) Sufficient sound level with integrated audio booster Bluetooth handsfree for Bluetooth mobile phones Bluetooth headset or stereo headset for Bluetooth GPS navigations Water resistant for use in inclement weather Crystal clear and natural sound quality Up to 8 hours talk time, 7 days stand-by time Can be used while charging on road trips Individual volume control for each audio source Firmware upgradeable Peace of mind – thanks to the two-year warranty * in open terrain Package Content Headset Main Unit Clamp Unit Helmet Speakers Wired Microphone Attachable Boom Microphone USB Power & Data Cable (Micro USB Type) Glued Surface Mounting Plate Microphone Sponges Velcro Pads for Speakers Velcro Pad for Boom Microphone Velcro Pad for Wired Microphone Attachable Boom Microphone Holder Speaker Pads Allen Wrench