The initial Royal Oak styles were fitted With all the calibre 2121 movement, which was dependant on the calibre 2120 made by Audemars Piguet in 1967, the whole world’s thinnest self-winding movement of your period with date indicator, and an Total height of three.05mm. The calibre 2121 was also equipped https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/