The SMH10 is a Bluetooth 3.0 stereo headset with long-range Bluetooth intercom designed specifically for motorcycles. With the SMH10, you can call handsfree on your Bluetooth mobile phone, listen to stereo music or voice instructions of GPS navigations by Bluetooth wirelessly, & have intercom conversations in full duplex with a passenger or other motor cycle riders. Article: Sena SMH10 Bluetooth Headset Single Pack, black for Men