Lumsing 2.4GHz, 3 Buttons, 4 Adjustable DPI Levels, 2400 DPI Ultrathin Optical Wireless Mouse Mice with Nano Receiver Compatible OS: Window XP/Vista/7/8, Mac OS White 2.4GHz wireless transmission up to 10 meters operating distance. Built-In mouse memory, no recording is needed after battery replacement. Intelligent connectivity, no need to code, plug-and play. With On/Off power switch. Adjustable DPI: 800/1200/1600/2400 Ideal laptop companion for home and office use.