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The best trackball ever made has just gotten better. The new Expert Mouse employs Kensington's Diamond Eye optical technology for smooth, precise cursor movement. Surrounding the ball, a brand new implementation of Kensington's award winning Scroll Ring puts scrolling right at your fingertips.
More comfortable than ever, the Expert Mouse even comes with a new, soft, detachable wrist rest that cradles your hand. You get all of these great new features along with the same, large ball, exceptional control, and ease-of-use that has set the industry standard for more than 15 years. An attached 6-foot cord provides plenty of slack for comfortable positioning within your workspace.