1mm. When AP marketed the watch as “Excess-Thin,” followers continued to check with it as “Jumbo” offered its 39mm circumstance. Other slight alterations incorporated a switch from a white date wheel to a black Edition about 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/