ok, not good.

However ...
I find the corrugated material on the sides not good. After some time, my skin feels irritated.
The DPI settings - just as it did a previous speaker has recognized - not optimal. The mouse is in a setting too slow and in the other too quickly.
Furthermore, the button for DPI switching can not reassign, I would find a double function very practical.
So I tried this feature on the left, or right-scrolling function of the mouse wheel lay, but this did not go.
According to the default feature I've found that even after the left or right scrolling is not working.

Had to prove other materials on the side and more options to the mouse buttons, or functioning buttons, I would keep well ... so not.