1mm. When AP promoted the watch as “Extra-Thin,” admirers continued to consult with it as “Jumbo” presented its 39mm circumstance. Other slight alterations included a change from a white day wheel to the black version to the blue and black dials and also the addition of the double-deployant clasp to https://www.watchesworld.com/a-guide-to-10-of-the-best-dress-watches/