The Sena 3SW is a Bluetooth 3.0 stereo headset with Wired Microphone designed specifically for motorcycles and entry level riders. With the Sena 3S, users can call hands free on Bluetooth mobile phone, listen to stereo music, and have two-way intercom conversations in full duplex with a passenger or other riders. Also, the easy-to-access and intuitive two-button operations make the 3S a perfect companion for motorcycles and is designed for full-face helmets.