Marathon mouse M705, sculpted and right-hand design forget the hassle, expense and waste of frequent battery changes. You will have up to three years of power. You pop the tiny unifying receiver in your notebook and leave it there. You can even add more devices. Plug it. Forget it. Add to it. Hyper-fast scrolling one spin and you may never go back to an ordinary scroll wheel. Up to three years of battery life helps you save time and the planet by practically eliminating the need to change batteries. The tiny wireless receiver stays in your notebook, so there is no need to unplug it when you move around. Plus you can easily add a compatible keyboard or mouse. You will 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. Laser precision means you will enjoy smoother tracking on just about any surface. The sculpted, right-hand shape with stealth thumb button guides your hand to a naturally poised position and places customizable control within your reach.