The first Royal Oak versions had been fitted with the calibre 2121 movement, which was according to the calibre 2120 produced by Audemars Piguet in 1967, the world’s thinnest self-winding movement of your era with date sign, and an Over-all top of 3.05mm. The calibre 2121 was also Outfitted which https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/