1mm. While AP marketed the watch as “Additional-Thin,” lovers continued to consult with it as “Jumbo” given its 39mm scenario. Other slight variations bundled a switch from a white date wheel to some black Edition to the blue and black dials and also the addition of the double-deployant clasp on https://www.watchesworld.com/a-guide-to-10-of-the-best-dress-watches/