LIIR G30 2.4G Wireless Portable Mobile Mouse Optical Mice with USB Receiver, 5 Adjustable DPI Levels, 4 Buttons for Notebook, PC, Laptop, Computer, MacBook - Black 50ft/15m Long Working Distance Compatible with most system including Windows, Mac and Linux. 15 Months Long Battery Life and Auto Energy-Saving Sleeping Mode. Feel-Good Design: Contoured shape and textured rubber grips keep your hand comfortable even after long hours, USB Nano Receiver which can be stored within the back of the mouse. 5 Adjustable DPI Switch: 2400, 2000, 1600, 1200, 800