As I said above, the rattling of the left and right buttons is annoying, having bought the mouse for the first time I returned it, deciding that it was a marriage. But the second had the same feature. I wrote to Logitech support, sent a video and of course no one answered. Over time, I got used to these sounds, but what to do, the mouse likes it :) After 5 months of use, pressing the wheel stopped working, that is, it works for scrolling, leans left and right (a cool option, by the way), but pressing is super important to me . Again I wrote in support and of course silence in response. In general, an excellent mouse, but it is a pity that pressing the wheel is buggy. Therefore, four. PS. I used the Logitech mx510 mouse! 13 years!, it is still in order and works properly, but it is morally outdated, so I decided to change it to the G502.