It's not a whole lot to say but it's a computer mouse. The mouse not only allows you to scroll up & down, but also left & right. It's optical so there is no ball at the bottom of the mouse to deal with, and this allows for smoother arrow tracking. It also has buttons on the side to allow you to go back and forth to view the previously viewed pages. The design of the mouse is kind of bulky so it takes a while to get use to, but other than that, I love the little thing. It's worth the money spent!