Black 3-Button 3D USB 800 Dpi Optical Scroll Mice Mouse LEDs For Notebook Laptop Desktop Precise optical technology 800 dpi resolution 3-button design Scroll Wheel (acts as third button) 3-Button USB Optical Scroll Mouse General Features: Color: Black/Clear Scroll wheel lights up RED USB Interface. Compatible with USB 2.0 & USB 1.1 Ergonomic designed 800 dpi for accurate control The roll wheel can be easily guided pleasantly and used as the third usable key Optical scanning on almost all surfaces, No mouse pad needed, functioned on the most surfaces