Specification: 1:Color: Black,White,Pink,Green,Grey 2:Material: ABS 3:Work: Photoelectricity 4:Battery capacity:500mAhChargeable lithium battery 5:Project Type: Ergonomics Optical Mouse 6: Resolution: 800,1200,1600. 1200dpi Default 7: Operation Mode:Opto-electronic 8: Rated voltage / current: 3.7V / 18mA 9: Power Type:RechargeableCharging time 2h,Working time 150h 10: Type:2.4Ghz Wireless Blueteeth mouse 11: System requirements: Windows 98 / Me / 2000 / XP / Vista / Win 7 / Win8 / 10/Vista Mac OS or latest. Installation and use steps: 1. Remove the wireless mouse from the box. 2. Remove the mini receiver installed in the bottom of the mouse, insert the computer's USB interface,free code, plug and play. 3. This product is a built-in lithium battery. You only need to set the bottom switch to the ON position. A charging cable is included in the package. When the cursor movement delay occurs, please insert the charging cable into the front end interface of the mouse to charge. Please try not to use it while charging!