Skque 2.4G Wireless Optical Mouse with USB Dongle for All Laptop,Computers,Apple Macbooks,green Two mouse mode, slow speed and fast speed for your convenience.One small button DPI can switch the mouse to slow or fast speed. Intellligent connectivity,no need to code,plug and play.Intelligent power saving management,low power consumption. 2.4G wireless transmission up to 10 meters operating distance.With an On/Off switch. Powered by 2x AAA Alkaline battery.(battery not included) Specifications as below:RF carrier:2402-2480MHz.USB version 2.0.Rated operation current:15mA,1.5V.Nano USB Dongle.