Groovestrap is a T-shaped strap for 2.5-inch external Hard Drive. It allows the user to access the MP3 files in the hard drive easily. This product definitely can add value to a run-of-the-mill consumer good such as hard disk. It has a knob on the left and right to function the player. The knob can re-capture the hands on connection between the user and a device to foster a physical experience and interaction. User can turn the knob to adjust the volume or change a song.