Latest Bluetooth technology allows you to make and take cell phone calls connect directly with another rider and listen to your favorite music.</br>Full-duplex intercom system allows 4 riders to communicate at a distance of up to 500 meters (0.36 miles) each.</br>Boom-Free mic high-quality speakers noise suppression and patented ABF technologies eliminate road and engine noise and other ambient sounds for clear conversations.</br>Ride in any weather water and temperature resistant. Operating temperature of -29?C (-20?F) to 60?C (140?F) ensures reliable operation even in extreme weather.</br>Voice-activated pick-up allows hands-free operation of incoming phone calls.</br></br>Product Description</br></br>The HBC100 Plus Bluetooth helmet communication system offers the absolute best in small group intercom. Enjoy conversation with up to four people at a range of over 1 mile at an affordable price point. The HBC100 Plus Bluetooth Helmet Audio System from UCLEAR Digital uses the latest Bluetooth technology. It?lets you communicate with other riders listen to music and make phone calls?while wearing a helmet. The full-duplex intercom system allows four riders to communicate at a distance