The primary Royal Oak designs were being fitted Using the calibre 2121 motion, which was dependant on the calibre 2120 made by Audemars Piguet in 1967, the globe’s thinnest self-winding motion of the period with date indicator, and an Over-all height of three.05mm. The calibre 2121 was also Outfitted by https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/