1mm. Whilst AP marketed the watch as “More-Thin,” fans continued to consult with it as “Jumbo” specified its 39mm case. Other slight modifications provided a swap from a white day wheel into a black Edition about the blue and black dials as well as addition of a double-deployant clasp on https://www.watchesworld.com/a-guide-to-10-of-the-best-dress-watches/