The very first Royal Oak styles were fitted with the calibre 2121 motion, which was depending on the calibre 2120 produced by Audemars Piguet in 1967, the entire world’s thinnest self-winding movement with the period with date sign, and an General peak of three.05mm. The calibre 2121 was also Outfitted https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/