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Title: Very uncomfortable
Review: I purchased this as a replacement for my Logitech M570. It was the 2nd M570 I owned and I loved the first one (it eventually broke), but the replacement that I got was always a little difficult to click. I assume they changed the design slightly, or maybe I just got a bad one. My wrist started bothering me so I wanted to try a different trackball. I got this one and hated it. It was very uncomfortable. I ended up returning it and going back to my difficult clicker :(
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