The Microsoft Wireless Notebook Optical Mouse is a unique mouse that offers excellent ergonomic and aesthetic design that people only dreamed of. The mouse is lightweight, small and extremely portable. It is a prime example of perfection at its peak for the many features it is comprised of. It utilizes only one AA battery and lasts on a average of three months. It moves smoothly across any surface and has precise accuracy. Microsoft has once again created a brilliant masterpiece for a mouse. The accurate optical technology, wireless capability, a quick installation and long battery life are only a handful of many features that the mouse has at an affordable price.