The Sennheiser Momentum Free Wireless allows you to listen to your music comfortably wherever you are. As there are no cables hanging around your body you have excellent freedom of movement. You will only feel a light cable by your neck. Use Bluetooth to wirelessly stream your music from a smartphone or tablet to the headphones. Bluetooth aptX ensures that you can stream music without sacrificing sound quality. It's just as if you're listening to a CD. When you're done listening to music just let the earbuds hang from your neck. The magnets will secure the earbuds firmly together. This means you won't lose the earbuds or get the cable tangled up.