Have a ball with the Kensington Expert Mouse Optical Trackball. The product employs DiamondEye optical technology for smooth and precise cursor control. Surrounding the ball is an award Scroll Ring® that puts scrolling right at your fingertips, enabling you to fly through web pages and documents. There's even a soft wrist rest included with the Expert Mouse® trackball for comfort and convenience no mouse can match. Designed for PCs and Macs and a large ball for exceptional control the Expert Mouse Optical Trackball sets the industry standard.
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