The mechanical wired mouse has 4 gears DPI to adjust.With LED backlight design, it is cool and stylish.With the ergonomic design, it is comfortable to hold and use.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