The Santos case/design is what makes it iconic and not necessarily the movement in this very particular "case".
... Rolex Oyster case, case in point. Some watches, really about the movement as much as it is with dial/case design. E.g., JLC Duometre/Lunaire, Moonwatch/Lemania 5100...
Although... of course... the thing needs to work first and foremost... but that is almost a foregone conclusion with a generic but reliable ETA base.