Reduce desk clutter with the Logitech Cordless Optical TrackMan. This trackball offers you all of the comfort and features you expect from Logitech, without the wires. Right-handed orientation and a contoured design mean you’ll receive all-day comfort. The marbled trackball allows your to enjoy the convenience of smooth optical tracking. Unlike traditional trackballs, the TrackMan is virtually maintenance-free. Your productivity is important to Logitech, which is why forward and backward buttons are included on the TrackMan. You’ll be moving through Web pages, images and files with ease. The scroll wheel navigates long documents easily and features a drag lock button so you can move around content effortlessly. The included MouseWare software allows you to program your controls to maximize your productivity. The TrackMan is also compatible with Windows Vista. Experience the Logitech difference today! Hand Orientation: Right Hand Power Supply: 2 x AA Batteries Operating System Supported: Windows XP, Windows Vista, or Windows 7 Mac OS X 10.4 or later System Requirement: USB / PS/2 port Features: Comfortable ergonomic design Soft-touch surface Large ball Stable base Wireless technology Eight-button convenience Fingertip-based control Marble optical technology Package Contents: Logitech Cordless TrackMan Optical Logitech Software CD for PC and Mac Wireless receiver USB to PS/2 adapter 2 AA batteries Quick-start guide Parts: 3 years limited Labor: 3 years limited