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Title: So disapointed!
Review: I purchased my first logitech wireless trackball 10 years ago. It features a large trackball and it saved me from a lot of pain. I still use it and love it. I needed a second one for another work site. On the new model the ball is too small and very difficult to control especially when highlighting and moving text. It hurts my wrist. Go back to the old design and send one to me. I can't find anything on the market that works for me.
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