It is powered by a single AAA battery and it can be used on almost any surface, even on your palm, as you can see in the photo above. It has three dpi settings and is switchable between 400/800/1200 dpi to accommodate various sensitivity preferences. It also has the capability to enter into a power-saving sleep-mode when not in use. To use it, just push the flying-scroll button either vertically or horizontally to scroll and activate the left-click by pushing it downward. Users can also activate the right click functionality by pressing the tip of the pen.