The mechanical wired mouse has 4 gears DPI to adjust.With LED backlight design, it is cool and stylish.You can use it for games, daily office work and home use.Item Name: Wired MouseMaterial: ABS, MetalNumber of Keys: 7Interface: USBDPI: 800, 1200, 2400, 3200 (Adjustable)Working Method: PhotoelectricWheel Direction: Four-way WheelType: Sound Version, Mute Version (Optional)Compatible Systems: for Windows XP/Vista/Win 7/Win 8/ME/2000, for Mac OS or the Latest VersionFeatures: Comfortable to Use, LED Backlight, Computer AccessoryCable Length: 1.5m/59.1" (Approx.)Size: 135mm x 78mm x 32mm/5.31" x 3.07" x 1.26" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x USB Wired Mouse1 x User Manual