1mm. While AP marketed the watch as “Excess-Thin,” lovers ongoing to confer with it as “Jumbo” given its 39mm circumstance. Other slight changes included a switch from a white date wheel to the black version to the blue and black dials as well as the addition of the double-deployant clasp https://www.watchesworld.com/a-guide-to-10-of-the-best-dress-watches/