Logitech Trackman Wheel
Logitech Trackman Wheel. First came out in 2001?
Early model has “shark gills” around the ball that lights up.
The “Logitech Trackman Wheel Optical” was the most popular. The great thing is that it is well designed for right hand, and has a scroll wheel. However, the ball is small, and for the thumb.
The newer model is Logitech M570.
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