In March, the first problems began in the form of sporadic interruptions of the connection. Relatively quickly left narrow that the USB receiver had an Macke. Whether mechanical loose connection or internal defect I could not diagnose, but the problem occurred on several PCs.
Amazon here behaved exemplary and exchanged the device within a few days. If I had written a review, it would probably have been five star. I was very satisfied with the mouse and had enough confidence in Logitech to go out with a clear conscience of a gaffe. Unfortunately, it had turned out differently.
A few minutes ago, the middle mouse button by now adopted another three months. Trying to Google, this specific defect appears to be an isolated case. Funny I find especially that I have the G602 compared to my old MX518 not used as much. In addition, I take my hardware downright with velvet paws. No transport, no LANs, no pizza fingers, etc. me is inexplicable, as just these rarely used key could only give up the ghost.
All in all I can for now only summarize that me this mouse has now gone over Jordan as a non-hardcore-users within 6 months twice. So I can say even the occasional use no recommendation. From real frequent players or meticulous workers who hit the keys 24/7 to mention.