Very subtle, not the usual Calatrava design (not that there’s anything wrong with that), and usual Patek quality.
Sadly never owned one, but have always liked them.
I believe they could have been intended to be a collaboration with Ferrari (alongside the 5028) and, although that never transpired, the watches ended up being released.
There was an Instagram post that seemed to authoritatively detail this but I can’t find the account that posted it.