Sena 3S Plus Bluetooth® Headset UniversalThe 3S Plus Universal headset utilizes Bluetooth 4. 1 to deliver incoming and outgoing audio for music, phone calls, GPS directions, and intercom conversations with a passenger or a riding companion up to 400 meters (0. 25 miles) away This Bluetooth headset allows up to eight hours of talk time on a single charge and seven days of standby time The 3S Plus Universal is able to be applied to a wide variety of helmets, the two button control module