1mm. Even though AP promoted the watch as “Additional-Thin,” fans continued to consult with it as “Jumbo” presented its 39mm case. Other slight alterations included a switch from a white date wheel to a black version over the blue and black dials plus the addition of a double-deployant clasp to https://www.watchesworld.com/a-guide-to-10-of-the-best-dress-watches/