The Adesso 3 button desktop optical mouse is full sized with scrolling features make navigating your computer a breeze. No more cleaning of your mouse ball and no more need for a mouse pad. Our mouse works on many different kind of surfaces like wood and plastic.N/AN/A<b>1000 DPI Resolution</b>N/AIt provides responsive smooth cursor control and precise tracking and easy text selection thanks to high-definition optical tracking (1000 dpi).N/AN/A<b>Optical Technology</b>N/AFeatures optical technology to work on virtually any surface with improved speed accuracy and reliability without the hassle of clogged mouse ball.N/AN/A<b>Metal Scroll Wheel</b>N/ANavigate quickly and easily with the convenient scroll wheel