<ul><li>1. Charge the mouse for about 2 hours before using it for the first time.2. The mouse cursor will move slowly or stop moving when the mouse is low battery. Please charge it on time. The blue light beside the scroll wheel will be on while charging, and then goes off when the mouse is fully charged.3. Turn on the mouse before plug the USB receiver which is in the bottom slot of the mouse to your computer USB port.4. The mouse will auto enter sleep mode for saving energy without any operation in 5 minutes, pressing any key can wake it up.</li></ul>