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