With the M950 Permance Mouse you get accurate, precise cursor control on virtually any surface, even glass tables (4 mm minimum thickness) where optical and standard laser mice fail. Turn the world into your mouse pad. The tiny receiver stays in your notebook. Plus, you can easily add a compatible wireless mouse or keyboard without the hassle of multiple USB receivers. The M950 is designed to fit your hand and put it in a comfortable, natural position. With 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. Customizable thumb buttons help you do more, faster. Move backward or forward through Web pages, zoom in or out on photos, and jump between open windows. A micro-USB cable charges your mouse through your computer or a standard outlet, even when in use. You’ll always have the power you need to get the job done. 3 year warranty.