Motorcycle/Ski/Atv Helmet Intercom Bluetooth Multi Interphone 500M - Set of 2 (HSP-500MBT) Wireless hands free communication for motorcyclist It can pair "rider to rider" or "rider to pillion". It can pair 3 interphones at a time, and easily switch to any 2 of them. Works with any Bluetooth equipped mobile phone, GPS or MP3 Stereo music, 500 meters Intercom range for drivers and passengers (1640 feet)