1mm. While AP promoted the watch as “Further-Thin,” followers continued to confer with it as “Jumbo” specified its 39mm situation. Other slight alterations bundled a change from a white date wheel to a black Variation around 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/