TENMOS T85 Rechargeable Wireless Gaming Mouse, 2.4G USB LED Optical Silent Computer Wireless Mice, Auto Sleeping, Ergonomics Grip, 3 Adjustable DPI, 6 Buttons Compatible PC/Laptop/Notebook (White) Rechargeable: Built-in rechargeable battery. No need to change batteries. Up to 18 months of Li-ion battery life virtually eliminates the need to change batteries (Battery life may vary based on user and computing conditions.) Its widely compatible with laptop/ computer that with USB port, support Windows XP, Windows Vista, Win7/8,10, Mac OS system. Silent Click: Special soundless design for the right and left buttons, help you build a quiet atmosphere without disturbing others. Auto Sleeping & Super Energy Saving: The mouse will keep automatically sleeping and LED light shut off for over 8 minutes of inactivity, it will turn to power saving mode to save energy. You can click any button to wake it up. LED Light-up Feature: 7 soothing LED colors change alternately, cannot be set to one specific color or turn off. Stable & Accurate Tracking: 2.4GHz wireless mouse, up to 10 meters ultra long-distance and stable wireless transmission. 800/1200/1600 CPI free switch to meet your needs with high precision. The higher CPI, the faster the cursor on your screen will move. It&#039;s out of power if the mouse cursor moves slowly or stop moving. The blue light beside the scroll wheel will be on while charging, and then goes off when the mouse is fully charged. Charge the mouse for about 2 hours before using it for the first time. Take the dongle out, which is stored in the back of mouse. Insert the dongle into the USB port of your PC. Turn on the mouse, the switch is at the bottom of the mouse. Allow a few seconds for installing, no action needed, just wait. Then you can use the mouse. 1*Wireless mouse 1*battery(built-in) 1*USB receiver(stored in the bottom of mouse) 1*USB charging cable 1*English manual