A versatile solution for helmet communication Delivers outstanding audio performance up to 200 meters (220 yards) away Bluetooth 3.0 advanced signal processing enables 3S to deliver outstanding incoming and outgoing audio for music, phone calls, GPS directions and intercom conversations with riding companions Unibody design integrates all the components - main units, control panel, speakers and microphone - into a single piece, which makes installation a snap Motorcycles are not the quietest vehicles on the road, that is why Sena built the 3S to boost and deliver crystal clear audio through the stereo headset, while employing noise-blocking technology that reduces engine, wind and street noise Up to 8 hours of talk time and seven days of stand-by time on a single charge