Kensington HID Expert Mouse

Kensington HID Expert Mouse: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.