The Kensington Wired Orbit Trackball Mouse with Scroll Ring and Wrist Rest K72337 is an ergonomic and reliable accessory for your computer. With a brand name you can trust, this trackball mouse is perfect for those who prefer an alternative to traditional mice. The scroll ring allows for easy navigation through documents and web pages, while the wrist rest provides support for long hours of use.This wired trackball mouse is easy to set up and use, and its sleek design fits comfortably in your hand. It is compatible with both Mac and PC, and is ideal for both home and office use. Add the Kensington Wired Orbit Trackball Mouse to your desktop setup today for a comfortable and efficient computing experience.