Features: 1. 3D wheel mouse 2. High resolution of 1000 DPI 3. No driver, plug & play 4. Ergonomic design, easefull operation, Enjoy your freedom of web suring 5. Scroll wheel, easy scrolling pages up and down, easy to scroll and zoom by your fingertip 6. Simply click on the wheel and overview your documents and images 7. Excellent sense of touch, work in comfort for both hands 8. Fashionable style, briliant & cool appearance System requirements: 1. IBM PC and compatiables 2. Windows 95, 98, Me, NT4.0, 2000 and XP