The Sportsband Bluetooth headphones produce a bass-rich Bluetooth music experience with any regular Bluetooth music device. You can purchase the Sportsband alone, or you can step up your music device's Bluetooth signal to apt-X CD quality with one of two apt-X enabling adapters. The uSport Universal Bluetooth Adapter works with any device with a regular sized headphone jack (3.5mm). It enables Bluetooth on your device and even gives the option of apt-X CD quality audio. It's very slim, designed to lay flat against your music device in your pocket or armband. The smallest Universal Bluetooth Adapter available. About the same size as an iPod shuffle Headphone jack tucks away for tidy storage Direct USB charging leak design Includes apt-X, the new professional grade standard for Bluetooth audio.