Logitech TrackMan Marble, Wired Trackball Mouse, 300 DPI Marble Optical Tracking, Ambidextrous, USB, PC / Mac / Laptop

The Logitech TrackMan Marble gives you superior comfort - for either hand. Ambidextrous design provides long-lasting comfort for right- and left-handed people. Convenient button controls let you easily move forward and backward when you?re surfing the Web. Click the large buttons together and use the ball for auto-scrolling. Fingertip-based control enables fast, accurate cursor movements. Paten...