Sony has released a couple of Bluetooth 2.1 headphones. It comes with echo and noise cancellation technologies. Sony DR-BT100CX and DR-BT101 are the two models that come with finger-tip controls for volume, play and skip music tracks along with the ability to either accept or reject incoming calls. The former model has USB charging with 8 hours of continuous playback and silicon ear buds of varying sizes while the latter has a 30mm neodymium driver and 12 hours of non-stop audio playback. They are currently available in Europe.