Originally designed by Toshiba, the Zune 30 is similar in design and size to the Toshiba Gigabeat S[1]. Differing from the Gigabeat S, the Zune 30 features a circular D-pad as its primary method of navigation. On left side of the d-pad is a back button. On the right side is a play/pause button. The Zune 30 features a refinement of the Twist Interface initially seen in Microsoft's interface for Portable Media Center devices [2].