Kensington Orbit Trackball with Scroll Ring

Spin the dial to move up and down web pages or documents with complete ease. The blue 40mm ball has been specially designed with an absolute spherical, hard surface for precise tracking and control. Provides precise cursor movement for superior accuracy so you can get where you want on the screen quickly with less hand movement, improving productivity and efficiency. Works equally well for both right-handed and left-handed users to get the most out of their trackball.