There are many cool things to love about the Philips Audio Key Ring. For starters, it is a 128MB USB storage device. Just plug it into your USB port and transfer data back and forth to it. Then unplug it and carry the data with you wherever you go on your keyring. However, you can also connect it to a lanyard and hang it around your neck. The lanyard has wires embedded in it, and allows you to play MP3 audio through the lanyard and out a headphone jack near your ear. The lanyard also has pressure sensitive patches that allow you to control the MP3 player and pick which audio track you want to hear.