The Sena SMH10 Motorcycle Bluetooth 3.0 Headset and Intercom was designed to keep you connected to your riding companions over longer ranges for conversation and music sharing--up to 900 meters (980 yards). When paired with a Bluetooth-enabled phone, it'll also let you make hands-free calls. The SMH10 features a Helmet Clamp Kit and Boom Microphone. The SMH10 delivers crystal-clear, natural sound through the stereo Bluetooth headset that gets an automatic boost in noisy environments while Advanced Noise Control technology cuts down on background noise for both incoming and outgoing audio. You'll get up to 12 hours of talk time and 10 days of stand-by time on a single charge. And even if your companions don't have Sena gear, the SMH10 uses the Universal Intercom protocol, which allows your gear to work with theirs, regardless of brand.