The sena momentum lite Bluetooth helmet serves up Bluetooth technology to the full face crowd. this techno lid features a built in Bluetooth communication device and speakers, allowing riders to go hands free without the hassle of a clamp on unit or unwieldy wires. the momentum lite is equipped with a built-in sena 10 series unit that allows riders to talk on the phone, connect with other riders, listen to music or have access to FM radio. the unit comes standard with Bluetooth 4.1 technology, as well as, sena's state-of-the-art advanced noise control technology and a range of nearly 1600 meters.