The SPH10S is designed and manufactured by Sena Technologies Inc. for aftermarket use with certain snow sports helmets manufactured by others. The SPH10S is a Bluetooth v2.1 Class 1 Stereo Headset with long-range Bluetooth Intercom. With the SPH10S, you can call hands-free on your Bluetooth mobile phone, listen to stereo music or voice instructions of GPS navigations by Bluetooth wirelessly, and have intercom conversations in full duplex with other riders.