Optimized for rolling solo or networked with up to four riders, Keeps a low profile thanks to an adhesive mount, Audio Overlay lets you listen to music while simultaneously using intercom for a truly uninterrupted experience, Outfitted with a robust electronics package for establishing a clear connection over 1400 yards, Link up with your friends on board Sena's RideConnected* app and enjoy other smartphone spoils like navigation, calls and tunes, Bluetooth? v4.1, Four-way Intercom, Water Resistant, Smartphone App for iPhone and Android