I still put a good week to get used to the mouse, and yet I still do not have the speed and accuracy that I had with a normal mouse.
But my worries disappeared within 2 days of use!
If not for the technical side, the mouse is plug-n-play. No special driver to install.
I regret the absence of specific software to configure with the buttons.
So I downloaded X-Mouse Button Control which works very well with.
I have still a question: what is the "DPI" button on the top of the mouse? It is not recognized by my setting software.