Specifications: This mouse has an intelligent power saving mode, which can last for a long time without frequent battery replacement. Equipped with non-slip rubber rollers, it has non-slip performance and good elasticity, which can help the mouse to use freely. Using 2.4GHz wireless technology and optical engine design, after connecting with USB, the computer will automatically detect the mouse, no driver or CD required. With 800-1200-1600DPI three-speed sensitivity adjustment, speed can be adjusted freely, which is suitable for various fields. With a mute switch button design, whether in a quiet office or studying at night, it will create a quiet and comfortable environment for you. Item Name: Mouse Material: ABS Photoelectric Resolution: 800-1200-1600DPI Gear Position: 3 Gear Adjustment Wireless Transmission Frequency: 2.4GHz Operating Distance: 10m Battery: 1 x AA Battery(Not Included) Features: Power Saving Mode, Easy to Install, 2.4GHz Wireless Technology, Three-Speed Adjustment, Non-Slip, Mute Switch Button Size: 9.8cm x 5.6cm x 3.4cm/3.86" x 2.20" x 1.34" (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 Mouse