The Logitech Media Play Cordless Mouse is like nothing you've ever seen before. First, it has all the features you need to use it as your everyday mouse: smooth optical tracking, clutter-free cordless freedom, extra navigation buttons, and a powerful scroll/tilt wheel that lets you scroll up and down, left and right, and in and out.' This little excerpt taken from the Logitech website almost perfectly describes the mouse. It definitely tracks smoothly and the lack of cords removes clutter, but what about these extra navigation buttons? Just because the mouse has eleven buttons doesn't mean any are extra!