1mm. Although AP promoted the watch as “Extra-Thin,” followers continued to confer with it as “Jumbo” offered its 39mm scenario. Other slight modifications included a change from a white day wheel to a black Variation around the blue and black dials as well as the addition of the double-deployant clasp https://www.watchesworld.com/a-guide-to-10-of-the-best-dress-watches/