The very first Royal Oak designs were equipped with the calibre 2121 motion, which was based upon the calibre 2120 created by Audemars Piguet in 1967, the world’s thinnest self-winding motion of your era with day indication, and an General peak of three.05mm. The calibre 2121 was also Outfitted with https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/