1mm. When AP marketed the watch as “Extra-Thin,” admirers continued to refer to it as “Jumbo” given its 39mm circumstance. Other slight variations involved a change from a white date wheel to your black Edition within the blue and black dials as well as the addition of a double-deployant clasp https://www.watchesworld.com/a-guide-to-10-of-the-best-dress-watches/