1mm. When AP marketed the watch as “Further-Thin,” supporters ongoing to consult with it as “Jumbo” offered its 39mm circumstance. Other slight improvements involved a switch from a white day wheel to a black Model over 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/