Features1. New Upgraded: Unique charging technology,built-in lithium battery2. Silent Design: The left and right click are both silence, no sound when you click3. 4 keys, more convenient for game operations4. 3 kinds DPI adjustable provides precise positioning5. Rechargeable: Built-in rechargeable battery, 2-3 months of use after 3-4 hours chargingSpecificationItem Name:2.4G Wireless MouseButtons: 4 buttonsThe Max DPI: 1600 DPIAjustable DPI Switch: 800 or 1200 or 1600 DPIWiFi Range: 10MBattery: RechargeableCharging Cable Length: About 50 cmSwitch Life: 10 M illion T imesSize: 112 x57 x20mmPackage Including1 x Wireless Mouse1 x USB Receiver1 x Charging Cable Note: 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.