1mm. Although AP marketed the watch as “Added-Thin,” supporters continued to seek advice from it as “Jumbo” offered its 39mm situation. Other slight alterations incorporated a change from a white day wheel to a black Variation on the blue and black dials along with the addition of a double-deployant clasp https://www.watchesworld.com/a-guide-to-10-of-the-best-dress-watches/