Standard Optical Mouse, M/N: A-1026 Key features & Specifications: 1. Ergonomic shape and comfortable to use 2. seven changeable color light designed on back of mouse, which looks like neon galaxy 3. Optical technology for precise tracking, no cleaning required 4. Resolution: 800dpi 5. Work on almost any surface except glass and mirror 6. Scroll light: Blue 7. Various colors for option 8. Interface: USB, PS/2 and combo for options 9. Operating Force:75+/-20gm 10. Dimensions:113*56*37mm 11. Switch: 3 buttons