Total: the mouse does what it was bought for, but did not get the "Wow" effect, I expected more. Apparently, for office affairs it is necessary to purchase a less sporty product. With its pros: Advanced device. I bought it not for games at all, but as a reliable device (if it can withstand games, then the "office" will surely survive), as it has customizable buttons - I work with the database, a million copies / pastes a day. While (several weeks) it works, the buttons do their job. Cons below: G HUB in the sense of interface and "friendliness" to the user is a puzzle game. The logic of the ideologist of this "product" is very peculiar, but "we have no barriers", and in an hour I achieved what I needed. But this is for the first time, again - 5 . 10 minutes of work. Further, my hand is medium in size, but the left side mouse buttons are not in place: when the hand is relaxed, the thumb presses one of them every now and then - assign non-critical commands to those buttons. The control of the speed of scrolling with the wheel did not work for me either: the corresponding button requires an unnatural bend of the finger for me and it would be better if there was a lever instead of a button. Another "sensitivity" button now and then falls under the finger without the need for it. It looks like the mouse came with a defect: wheel left and wheel down give the same command. Since there are many other buttons, I did not bother with the return.