Yea, this one is actually a Logitch 602 I've had for years, and it's my 3rd one after two warranty replacements so the build quality has always been questionable but I love the button layout on this mouse and the software is usually pretty good at doing what I want so I'm dreading having to replace it. There was apparently another similar one that came out a couple years ago but they don't make them anymore and from what I was reading the quality was garbage too. I still have the one from the second time I replaced it through the warranty so I'm going to replace the problematic switches on it and see how that goes.