1. Only the left and right buttons of the mouse is silent, the two side buttons are not.
2.Please charge the mouse for about 2 hours before first time use it.
3.When you do not use it over 8 minutes, the mouse will enter into sleeping mode,you can click any button to wake it up.
4.This is a rechargeable mouse, no need to change battery. Plug and play, no other driver required.
5.It’s out of power if the mouse cursor moves slowly or stop moving.
6.The blue light beside the scroll wheel will be on while charging, and then goes off when the mouse is fully charged.
Battery: lithium battery
Interface Type: USB
Working Type: Optical
Wireless Technology: 2.4GHz
Buttons: 5 Buttons, 1 scroll wheel
1*USB charging cable