SF2 Bluetooth® Communication SystemProvides two-way intercom communication for driver-to-driver or driver-to-passenger up to 880 yards in open terrainSmartphone connectivity allows for music streaming, taking and making phone calls and hearing turn-by-turn GPS directionsFeatures Audio Overlay™, allowing riders to listen to music and use the intercom simultaneouslyUp to 13 hours of talk timeAdvanced Noise Control™Built-in FM radioSena SF2 Bluetooth helmet Dual Kit