1mm. Even though AP promoted the watch as “Additional-Thin,” admirers ongoing to refer to it as “Jumbo” offered its 39mm circumstance. Other slight alterations included a swap from a white day wheel to a black version around 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/