The Motorola MOTOROKR S9-HD Bluetooth Stereo Headphones gives freedom to exercise, move around and commute without wires to tangle or hold you back, is now enhanced with high-definition audio and ear buds that reduce background noise and improve comfort. The S9-HD is the new benchmark of wireless music powered by Bluetooth wireless technology. Weighing barely an ounce, they are lighter than an average pair of sunglasses. The unique behind-the-head design creates a secure and stable fit - even in active conditions - plus easy to use controls for track selection, volume, play/pause and send/end that allow you to manage music