Specifications: 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 Mouse Material: ABS, Metal Number of Keys: 7 Interface: USB DPI: 800, 1200, 2400, 3200 (Adjustable) Working Method: Photoelectric Wheel Direction: Four-way Wheel Type: Sound Version, Mute Version (Optional) Compatible Systems: for Windows XP/Vista/Win 7/Win 8/ME/2000, for Mac OS or the Latest Version Features: Comfortable to Use, LED Backlight, Computer Accessory Cable 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'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 Mouse 1 x User Manual