Logitech Advanced 2.4 GHz wireless delivers the reliability of a cord plus wireless convenience for up to 10 meters, with virtually no delays or dropouts—even in the busiest wireless environments. The Logitech® receiver is so tiny, you can plug it in once and forget about it. Plus, the mouse features a built-in storage compartment, so you can take your mouse wherever you use your computer. A 24-month keyboard and 12-month mouse battery life with auto-sleep and on/off switch lets you go years without the hassle of changing batteries.