1mm. When AP promoted the watch as “Extra-Thin,” enthusiasts ongoing to consult with it as “Jumbo” given its 39mm situation. Other slight modifications bundled a swap from a white date wheel into a black Model within the blue and black dials as well as the addition of a double-deployant clasp https://www.watchesworld.com/a-guide-to-10-of-the-best-dress-watches/