1mm. Even though AP promoted the watch as “Additional-Thin,” followers ongoing to refer to it as “Jumbo” supplied its 39mm case. Other slight alterations bundled a swap from a white day wheel into a black version about the blue and black dials as well as addition of the double-deployant clasp https://www.watchesworld.com/a-guide-to-10-of-the-best-dress-watches/