1mm. Though AP marketed the watch as “Excess-Thin,” supporters ongoing to seek advice from it as “Jumbo” given its 39mm scenario. Other slight variations bundled a change from a white day wheel to some black Edition to the blue and black dials and also the addition of a double-deployant clasp https://www.watchesworld.com/a-guide-to-10-of-the-best-dress-watches/