Logitech took its classic optical mouse and made it even better. How? By improving both its shape and its performance. The Logitech Pilot Optical Mouse features the world's best-selling optical technology for incredibly smooth tracking with no maintenance necessary. Scrolling is quick and precise too, thanks to the new scroll wheel. Unlike standard mechanical scroll wheels, this wheel is based on an optical system for improved feel and precision. The comfortable design feels great in either hand, and setup couldn't be easier - all you need to do is plug it in.