The initial Royal Oak versions had been fitted While using the calibre 2121 movement, which was according to the calibre 2120 made by Audemars Piguet in 1967, the world’s thinnest self-winding movement of your era with date indicator, and an Over-all height of three.05mm. The calibre 2121 was also Outfitted https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/