Logitech TrackMan Wheel TrackBall Mouse, 3-Button USB & PS/2, P/N: 904353-0403

With a sleek design and intuitive placement of the ball, scroll wheel, and buttons, the TrackMan Wheel is perfect for long hours of use. It fits comfortably in your right hand and delivers smooth, ultra-precise tracking through Logitech's optical Marble technology. And because it records motion optically instead of with mechanical parts, there's no need for regular cleaning.

# Features: A comfortable, space-saving design for your right hand.
# Three customizable buttons and a scroll wheel.
# WebWheel software to enhance Internet browsing.
# Easy to install and set up.