Klip Xtreme Full Size USB Mouse- 3D Optical 3 Button- 1000 DPI Resolution- USB Connection- Ergonomic & Contoured Design- Lighted Scroll Wheel- Plug and Play- Black Color Klip Xtreme, a US Company committed to Quality and Customer Service with over 16 Million products shipped since 2003 Klip Xtreme 3D Optical Mouse with 3 Buttons including built-in Scroll wheel for easy Navigation, USB Comfortable Contour Full sized design with textured side grips Lighted Scroll Wheel and 1000 DPI Optical Resolution, Plug and Play PC and Mac Compatible, 1 Year Limited Warranty