Parameters: Wireless technology:2.4GHz Wireless distance:8m Size: 104*58*37mm The number of keys:4 Resolution：800-1600DPI Key life:1,000,000 times Power supply:1*AA (Alkaline batteries are recommended) WIRELESS  MOUSE Advanced 2.4GHz wireless technology, the effective working distance of up to 8 meters. 800-1600DPI solution , fast and accurate positioning when you are using it. Ergonomic design ,it can be used by both left or right hand according to people’s using habits. Built-in auto sleep function. Easy to install, plug and play. MINI receiver can be hidden inside the mouse, very convenient and portable. System supported:windows 2000/XP/Vista/ Windows 7/ Windows 8/Windows 10/linux/mac ❤In order to protect the mouse, please don’t use the mouse on rough surface. It’s helpful to use it with a good-quality mouse pad. ❤The light of the mouse bottom is very strong, please don’t put it towards to your and others’ eyes. ❤ The component parts of the mouse are from concise electronic parts, please pay attention not to twist or dissemble the mouse, otherwise its service life could be shorter.