Auawak Rapoo M211 2.4G Ergonomic Optical Engine Wireless Mouse for Laptops Desktops and PC - White RAPOO 2.4G wireless transmission technology brings you 10-meter working range wireless connection without any interference and enables you to enjoy the freedom and comfort of wirelessness. Colors like quiet blue, festive red, solid black and other variations color your desk and your life. With Rapoo's latest energy saving technology and power switch, you can use your mouse without power interruption for up to 9 months. So small and unobtrusive, you can plug it into a USB-port and forget about it. No more worries about lost receivers. Enjoy accurate and smooth cursor control with the 1000 DPI high-definition invisible tracking engine.