Designed for PCs and Macs, the Expert Mouse employs Kensington's DiamondEye optical technology for smooth, precise cursor movement. Surrounding the ball, the award-winning Scroll Ring puts scrolling right at your fingertips. Large ball delivers maximum precision and control. Mouse even comes with a soft, detachable wrist rest that cradles your hand in comfort.

• DiamondEye Optical tracking for superior accuracy.
• Award-winning Scroll Ring - precise scrolling at your fingertips.
• Exceptional comfort for ultimate productivity.
• Large ball for maximum precision and control.
• Detachable wrist rest cradles your hand in comfort.

• PC running Windows 98 or later with an available USB or PS2 port.
• Mac running OS X or later with an available USB Port.
• Internet connections or CD ROM drives to install the software.