For its price, I expected greater sensitivity. It would also be helpful if you could do horizontal scrolling without any specific settings (at least in a Linux environment, maybe it supports it in Windows).

Update: Eventually, horizontal scrolling is done quite easily by pressing the shift key simultaneously with turning the ring.

The mouse for its job is excellent. The keys have a small sound but nothing too noisy. Easy to clean, extremely accurate in movements and the extra wrist support pad they provide has a leather texture that doesn't seem to wear out quickly.

You step somewhere else and you find yourself somewhere else.
It's a pity about the money.
I had the Kensington Orbit Trackball with Scroll Ring
and I was and still am very satisfied, why did I want to
go for something even better?
Now it sits in a drawer.