The first Royal Oak styles ended up equipped with the calibre 2121 motion, which was dependant on the calibre 2120 created by Audemars Piguet in 1967, the entire world’s thinnest self-winding movement in the period with day sign, and an Over-all peak of 3.05mm. The calibre 2121 was also Outfitted https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/