A wireless laser mouse that lets you power on with a three-year battery life and a tiny, leave-in receiver. Three-year battery life Up to three years of battery life helps you save time, money, and the planet by practically eliminating the need to change batteries. An indicator light lets you know when the battery is low.* * Battery life may vary based on user and computing conditions. Logitech Unifying receiver The tiny wireless receiver stays in your notebook, so there’s no need to unplug it when you move around. Plus you can easily add a compatible keyboard or mouse.Learn more about the Unifying receiver. Hyper-fast scrolling You’ll fly through documents and Web pages with a single spin. Click-to-click scrolling gives you the precision you need when navigating lists, slides, and images.Excited about hyper-fast scrolling? Laser tracking Laser precision means you’ll enjoy smoother tracking on just about any surface. * The laser sensor does not work on glass or mirrors. Sculpted, right-hand design The sculpted, right-hand shape with stealth thumb button guides your hand to a naturally poised position and places customizable control within your reach.Comfortable hands like comfortable mice.