A4Tech WUT-13 * Discontinued! Only a Limited Stock Still Available. *
A4Tech has designed the ScrollTrack 4D trackball for performance and comfort. The left buttons allow easy reach for any ones thumb. The customizable middle button is located right of the ball on top of the right button, which can be defined by the user with the help of 4D Scrollware software found here. Smooth rolling is provided by 4 point rollers which provides greater comfort while being productive. The Dual -Wheel Scrolling technology allows one wheel to scroll vertically and the other horizontally. Light rollers make easy work of rotating the wheels in either direction. Regardless of your hand size, the ScrollTrack is deigned to support the natural angle of your hand and wrist.
Bonus: Includes a free USB to PS/2 Adapter