For precision control with cable-free freedom, opt for the Kensington K72352EU Wireless Trackball.With a trackball for highly accurate cursor control, the Kensington K72352EU enables you to navigate your desktop as freely as with a standard mouse without the stress on your arm. The trackball allows you to keep your arm in one place whilst the ball does all the work.Additionally, as the Kensington K72352EU is wireless, you will be able to position it in the most comfortable position, whether that be the desk, your lap or a tray, without the worry of being literally tied to your computer.The Kensington K72352EU Wireless Trackball will be an excellent addition to your computing setup, and will be perfect for those long, mouse-intensive projects.