With an MP3 player with Bluetooth you have the possibility to enjoy your favorite music or film wirelessly. By using Bluetooth techniques A2DP or Apt-X you stream the sound to your Bluetooth headphones. With Apt-X you are assured of high-quality sound in CD quality while A2DP is supported by more devices. So look, before you want to buy a new MP3 player with Bluetooth, which variant of Bluetooth supports your headphones.