Arabest 1. If the mouse responds slowly or works improperly, this might be caused by a low battery and will be solved by charging it. 2.The mouse will enter into sleep mode without operation 10 minutes, please click the left/right button to awake it. 3.Please charge the mouse for 2 hours before the first time to use it, The blue light beside the scroll wheel will be on while charging and then goes off when the mouse is fully charged. 4.Because both left and right buttons with a silent design, you don't need to worry about bothering others during the session of gaming and working. Computers & Tablets