Rechargeable: Built-in battery with charging cable. No need to change the batteries. It is largely compatible with laptop/computers that support USB port, Windows XP, Windows Vista, Win7/8.10, Mac OS system. Silent Click: Special silent design for the right and left buttons, helps you create a quiet atmosphere without disturbing others. Auto Sleeping Super Energy Saving: The mouse turns off automatically and the LED light turns off for more than 8 minutes of inactivity. It is switched to power saving mode to save energy. You can click any button to activate it. LED function: 7 soothing LED colors alternately, cannot be set to a specific color or turned off. Stable and accurate tracking: 2.4GHz wireless mouse, up to 10 meters ultra remote and stable wireless transmission. 800/1200/1600 CPI free switch to meet your requirements with high precision. The higher the CPI is, the faster the cursor moves on the screen. NOTE: 1. The size of the product is measured manually, and there will be an error of 2-3mm due to factors such as different measurement tools and measurement methods. 2. This product is all taken in kind, but due to differences in photography, lighting, color deviation, and personal understanding of color. As a result, there may be some color difference between the actual product and the photo, and the color is subject to the actual product. 3. Please take good care of our products