1mm. When AP promoted the watch as “Extra-Thin,” admirers continued to consult with it as “Jumbo” provided its 39mm case. Other slight modifications involved a switch from a white date wheel to your black version within the blue and black dials as well as addition of a double-deployant clasp on https://www.watchesworld.com/a-guide-to-10-of-the-best-dress-watches/