Designed specifically for motorcycles Bike to bike or rider to passenger communication Bluetooth specification v3.0 Available with Boom microphones for open-face helmets or with wired microphones for full-face helmets Bluetooth Intercom up to 700 meters (760 yards) in open terrain Built-in FM radio tuner with station scan and save function 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 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 seven hours talk time, six days stand-by time Can be used while charging on road trips Individual volume control for each audio source Firmware upgradeable Headset main unit 1- Clamp unit 1- Attachable Boom microphone 1- USB power and data cable 1- Hook-and-loop surface mounting plate 1- Hook-and-loop pad for Boom microphone 1- Attachable Boom microphone holder 1- Allen wrench 1- Owners manual 2- Microphone sponges 2- Hook-and-loop pads for speakers 2- Speaker pads 2- Helmet speakers