The best trackball ever made just got better

• Designed for PCs and Macs, the new Expert Mouse employs Kensingtons Diamond Eye optical technology for smooth, precise cursor movement

• Surrounding the ball, our award winning Scroll Ring puts scrolling right at your fingertips

• More comfortable than ever, the Expert Mouse even comes with a soft wrist rest

• You get all of these great new features along with the same, large ball, exceptional control, and precision that has set the industry standard