1mm. While AP marketed the watch as “Further-Thin,” fans continued to confer with it as “Jumbo” offered its 39mm scenario. Other slight alterations involved a swap from a white date wheel to some black Edition around 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/