(*regular $35 - $10 mwave instant discount = $25, while supplies last!) (*Limit 1pcs/customer)
# High-precision, low-maintenance Marble advantage. Patented optical Marble technology delivers superior precision, reduced wear and smooth tracking, even if the trackball gets dirty. Because it records motion optically instead of with mechanical parts, there's no need for regular cleaning.
# Precise thumb control
# Feel the difference. Touch the gentle curves, roll the trackball, and you'll appreciate the comfort and smooth motion.
# WebWheel provides convenient scrolling and fast, easy Internet access.
# Built to last. Made with the quality of Logitech, the world's largest manufacturer of mice and trackballs
mwave.com: LOGITECH trackman optical wheel contour design USB/ps2 (retail) (*regular $35 - $10 mwave instant discount = $25, while supplies last!)
LOGITECH trackman optical wheel contour design USB/ps2 $24.99 
