Bike to bike or rider to passenger communication Bluetooth specification v3.0 Bluetooth Intercom up to 900 meters (980 yards) in open terrain Ultra slim and light for sportbike helmets Four-way conference intercom Conference phone call with intercom participant Multi-point for mobile phone and GPS Voice Prompts Bluetooth stereo headset by A2DP Bluetooth music playback control by AVRCP: play, pause, track forward and track back Sufficient sound level with integrated audio booster Bluetooth hands-free 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 eight hours talk time, seven days stand-by time Can be used while charging on road trips Individual volume control for each audio source Firmware upgradeable External battery can easily be swapped out or replaced Kit Includes 1- Headset main unit 1- Attachable Boom microphone 1- Wired microphone 1- USB power and data cable 1- Cigarette charger 1- Owners manual 2- Battery pack 1- Battery charger adapter 1- Large helmet speakers 2- Speaker pads 2- Microphone sponges 1- Hook-and-loop pad for boom microphone 2- Hook-and-loop pads for main unit 2- Double-sided adhesive tape for main unit 1- Hook-and-loop pad for battery pack