Wireless mouse features plug-and-play simplicity to let you plug in the nano receiver and start using your mouse right away with no software or hassles. The tiny wireless receiver is so small and unobtrusive that you can plug it in and forget about it. Advanced 2.4 GHz wireless connectivity provides the reliability of a cord with wireless convenience and freedom without any delays or dropouts. 12-month battery life eliminates the hassle of frequent battery changes. The On/Off switch and smart sleep mode help conserve power for increased battery life.