1mm. Although AP marketed the watch as “Additional-Thin,” supporters continued to refer to it as “Jumbo” given its 39mm circumstance. Other slight adjustments integrated a change from a white day wheel to some black Variation on 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/