It's great to have you here!
Well, i have an ultra small wrist too but I wear even the 60mm Egiziano with absolutely zero problem!
THe best i can give is for you to try a few pieces out, and as long as you are comfortable with them, go for it!
I don't believe there's a strict rule as to what size you can or cannot wear.
It's all up to your personal confidence!
Ciao
Stephen