UCLEAR HBC100D Dual Sports Helmet Communicator Bluetooth Headset Latest Bluetooth technology allows you to make and take cell phone calls, connect directly with another rider, and listen to your favorite music. Make sure they hear what youre saying. Boom-Free microphone with integrated high-quality speakers, and noise suppression and patented ABF technologies eliminate road and engine noise and other ambient sounds for clear conversations. Voice-activated pick-up allows hands-free operation of incoming phone calls. Rider to passenger communication via the built in intercom system. Ride in any weather our HBC units are water, heat and cold resistant. Operating temperature of -29C (-20F) to 60C (140F) ensures reliable operation even in extreme weather.