Kensington Slimblade Trackball, Multi-Function, Low Profile Shape Multi-function ball lets you easily navigate through your music, pictures and documents using media or document view mode. Control cursor and scrolling; volume, play/pause, stop, and next; zoom in/out, and pan, all with the ball. Keep an eye on which application you are in and which function is being performed with the heads-up display on your monitor. With its low-profile shape, youŽll be able to use it comfortably for hours on e
