Features: 1) Ergonomic and optical technology design 2) Resolution: 400dpi, 800dpi 3) Supports Windows 95 / 98 / Me / NT / 2000 / XP 4) Works on most of surfaces 5) No need to clean dust 6) Different colors available 7) Size: 119.5 x 67.5 x 37.8mm 8) Weight: 113g 9) Resolution: 600 - 800dpi 10) Key-press life: 150,000,000 times 11) Scan speed: 1,500 - 3,000/s 12) Supports Windows 95 / 98 / Me / NT4.0 / 2000 / XP 13) Connector: PS/2, USB, combo