Of my watchmaker. It's a little bit far from you two but I love his work.
He don't let a watch, that is designed to flip the date at midnight, go out if the watch is not doing what it was designed to do, meaning midnight.
One day, I went to retrieve a watch there and I was in a hurry. He spend a lot of time, that I didn't had, adjusting it until the date flipped exactly at midnight.
Perfectionist, for sure, but he and his team are trained to be perfectionists.
Cheers.
Nilo