1mm. Whilst AP marketed the watch as “More-Thin,” supporters continued to refer to it as “Jumbo” offered its 39mm case. Other slight changes bundled a change from a white date wheel to a black version around the blue and black dials along with the addition of a double-deployant clasp on https://www.watchesworld.com/a-guide-to-10-of-the-best-dress-watches/