The genius of this grinder is how easy it is to adjust how finely ground your beans are. Just twist the upper bean container to vary it, depending on what kind of flavour you’re after.
A borosilicate glass container is much more efficient at catching the ground coffee, as it’s static-free, unlike plastic, which it’ll stick to and hence spill everywhere.
A silicon band makes the glass slip-proof too, which is great if you’ve got wet hands/are drunk. It also looks like the kind of thing you’d find in Batman’s kitchen, which has to be a good thing.