1. Adopts optical orientation technology, high accuracy and reliability 2. Ergonomics designed 3. Intelligent Internet function 4. High resolution: 800 DPI 5. Zoom in and zoom out function 6. 3D function, multiple decoded 7. Working on any surface except glass and mirror 8. PS/2, USB, Combo port available 9. Compatible with windows 2000/XP/9X/ME/NT4.0, windows vista