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Title: I love Logitech, I hate the Trackman
Review: I had this ordered for me to replace my standard issue mouse when I couldn't find the older model thumb controlled track ball through my office's suppliers. I used it for about a week, and then had it shipped back. It caused severe hand pain and cramps if I used it for more than a half hour or so. I assumed that it was just because I needed to get used to the new finger tip controls. My hand never adjusted to having to crane my fingers up to use it. Hence the pain that this device caused was worse than that of the mouse I was trying to replace.The cordless feature seems like a great idea, at least at first. But this is a trackball... it doesn't need to move around your desktop. So unless your CPU is really far away from your desktop, save yourself a few bucks and get a wired model.
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