The Ultimate Trackball
The best trackball ever made has just gotten better. Designed for PCs and Mac's, the new Expert Mouse employs Kensington's Diamond Eye optical technology for smooth, precise cursor movement. Surrounding the ball, we have a brand new implementation of our award winning Scroll Ring that puts scrolling right at your fingertips. More comfortable than ever, the Expert Mouse even comes with a soft new wrist rest-right in the box! 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.

Features
DiamondEye Optical tracking for superior accuracy
Award-winning Scroll Ring for precise fingertip scrolling
Exceptional comfort for ultimate productivity
Large ball for maximum precision and control
Detachable wrist rest cradles hand in comfort
Specifications
DiamondEye Optical Technology
Scroll Ring encircling the ball
Largest ball of any of the mainstream, consumer devices
New design to match the latest in computing hardware
Metallic black and silver color scheme
System Requirements
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.
Dimensions
Weight .75 lbs.
Product height is measured to the top of the ball. Housing height is 1.75 5.75"L X2.5"H X5.0"W
Cord length - 6
Warranty
Expert Mouseis backed by the Kensington 5-Year Warranty and free technical support.