I don't know why I waited too long to buy a small, convenient optical mouse. It's a great value and works very well with a notebook. The retractable cord is a convenience and the size is just right for working on small tables such as on an airplane tray. It is also very attractive and looks expensive. It comes with a small carrying case which can fit nicely in your pocket. For the business traveler with a notebook computer, forget the built-in trackball in your notebook and invest in this modestly priced mini optical mouse from Targus.