Amazingbuy 2 Sets Vnetphone V6 BT Intercom Bluetooth Interphone 1200M Range 6 Riders Motorcycle Helmet - Motorcycle Snowmobile Multi Interphone Headsets 6 Riders. Great for Skiing and Riding 1200 meters talking range intercom, Bluetooth interphone kits for helmet motorcycle, Snowmobile, ski, ATV etc. communication system 6 Riders Up to 120km/h speed Up to 7 hours talking time Auto-receiving mobile call Mobile/mp3/stereo music Audio navigation from GPS Line-in audio interface Wind noise DSP cancellation Full weather protected It can pair "rider to rider" or "rider to pillion". Can pair 6 interphones at a time, and easily switch to any 2 of them. Works with any Bluetooth equipped mobile phone,GPS or MP3 Stereo music With 3.5mm audio input, can work with external media play devices, like MP3/portable CD player/IPOD and etc. Plastic + Rubber button, more stable structure, better waterproof performance. This system is fully weather protected. Wireless hands free communication for motorcyclist Safe driving while talking with friends Play stereo music from your mobile phone Can be used as a Bluetooth headset and a wireless music headset while you're not riding Digital signal processor(DSP) technology for wind noise cancellation Excellent performance at speeds up to the legal limit with a full face helmet Easily molunts to all full face and open face helmet