The very first Royal Oak versions were equipped Along with the calibre 2121 motion, which was based upon the calibre 2120 developed by Audemars Piguet in 1967, the entire world’s thinnest self-winding movement of your era with date indicator, and an Total height of 3.05mm. The calibre 2121 was also https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/