The very first Royal Oak types were being equipped with the calibre 2121 motion, which was based upon the calibre 2120 developed by Audemars Piguet in 1967, the world’s thinnest self-winding movement with the era with day indicator, and an Over-all top of three.05mm. The calibre 2121 was also Outfitted https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/