The main Royal Oak products ended up fitted With all the calibre 2121 motion, which was based on the calibre 2120 made by Audemars Piguet in 1967, the entire world’s thinnest self-winding motion with the era with day indicator, and an All round height of 3.05mm. The calibre 2121 was https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/