Importer520 3-Button 3D USB 800 Dpi Optical Scroll Mice Mouse LEDs For Notebook Laptop Desktop (Black) BRAND NEW GENERIC BULK PACKAGE Bottom and back light up red USB interface (4-foot cable length, approximate) Precise optical technology 800 dpi resolution 3-button design Scroll Wheel (acts as third button) Style and comfort in the palm of your hand PC and Mac compatible Regulatory Approvals: FCC CE 3-Button USB Optical Scroll Mouse General Features: Color: Black/Clear Scroll wheel lights up blue