Mouse options come in three different configurations: the mechanical, the optical, and the trackball. Let's explore the differences between these.
The mechanical mouse is the the most common type. It has a ball that rolls against the surface of a desk. Also known as a ball mouse, this device requires constant maintenance because the ball attracts lint and dirt from the desk surface. A mechanical mouse may have come by default with your computer purchase, but these products are currently being phased out for the next generation, optical tracking mice.
The Optical mouse differentiates uses a light beam sensor to direct the pointer, instead of a ball. The wonderful thing about this mouse is that you don't need a mousepad (it works best without it), and you don't have clean it, because there are no exposed gears. Most optical mice come with a scrolling wheel, which comes in between the right and left buttons on the mouse. It's a wonderful feature because it allows you to scroll while keeping your hand stable.