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: MouseMaterial: ABSPhotoelectric Resolution: 800-1200-1600DPIGear Position: 3 Gear AdjustmentWireless Transmission Frequency: 2.4GHzOperating Distance: 10mBattery: 1 x AA Battery(Not Included)Features: Power Saving Mode, Easy to Install, 2.4GHz Wireless Technology, Three-Speed Adjustment, Non-Slip, Mute Switch ButtonSize: 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& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Mouse