Lot of accessories and you can customize the mouse as needed.
The software that manages the mouse is a little unstable, and impractical.
However, I find it too expensive compared to what we find on the market. I do not like the shape of the mouse, it is a little too small when I hand rather medium / small. In short, the value for money is not optimal.
I preferred the return. However if you absolutely love the brand or if it's for a gift, it surely will please the lucky recipient.