Average Reviews:
(More customer reviews)Actually this is an optical trackball with a one inch diameter red ball (the marble in "marble mouse") that moves within a three point holder with an optical pickup.
Only the ball moves.
There are four buttons, two are smaller and hard to see in the picture.
It is perfectly designed, very simple and effective.
It is quite different than a moving mouse, and faster, too.
It takes a few minutes to get used to, but once you do, you may never want go back to a moving mouse again, mouse pad and all
This is just the thing to end repetitive motion pain and injury, especially if you turn up the mouse sensitivity or "acceleration".
It is easy to clean, just pop out the red ball and wipe the holder.
And believe it or not, I have seen expert gamers using it very effectively, and I swear they were faster than their competition.
I use it for all my mundane computer work and no longer suffer from "mouse hand" pain.
Click Here to see more reviews about: Logitech Marble Mouse - Trackball - optical - 4 button(s) - wired - PS/2, USB - silver, red
Product Description:
Manufacturer Warranty Description: Manufacturer's three-year warranty.The sleek shape of this advanced trackball delivers all-day comfort for either hand. Uses optical Marble® technology for smooth and precise tracking. Its large trackball improves control while reducing hand and wrist motion. Offers multiple scrolling options and customizable buttons for personalized navigation. Mouse Technology: Optical; Trackball; Connector/Port: PS/2; USB; Left/Right Hand Use: Left; Right; Buttons: 4; Programmable; Scroll
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