First,Adopt bluetooth 4.0 technology, built-in 450mAH A product lithium battery, configuration charging line, like a mobile phone, easy to charge, more scientific, charge and discharge of more than 500 times, the mouse no longer need to buy a battery. size: 113mm x 58mm x23mm weight : 3.2 oz package: Bluetooth mouse x1, USB Charging Cable x1 How to …