Kensington Orbit Optical Trackball Mouse: The comfort and ease of a mouse - the benefits of an optical trackball. The precise optical tracking mechanism is also resistant to dust, reducing the need for regular trackball cleaning. Designed for PCs and Mac's, the Orbit Optical Trackball employs Kensington's Diamond Eye optical technology for smooth, precise cursor movement. Diamond Eye provides unmatched acceleration control, combined with ultra-high speed optical optical technology to produce the ultimate in precision and accuracy. Plus, the Trackball stays in one place, saves valuable desk space. Users tell us the Orbit Optical Trackball delivers great speed and tracking accuracy for the price. Compare the Kensington Orbit Optical Trackball Mouse to the Logitech Cordless Optical Trackman or Trackman Wheel or Microsoft Trackball Explorer. The Kensington Promise: 5 year warranty with free
Wired USB Connection; Trackball Works Customization; DiamondEye Optical Tracking