1mm. Even though AP promoted the watch as “More-Thin,” admirers ongoing to refer to it as “Jumbo” given its 39mm scenario. Other slight adjustments integrated a change from a white day wheel to a black version over the blue and black dials along with the addition of the double-deployant clasp https://www.watchesworld.com/a-guide-to-10-of-the-best-dress-watches/