The 1st Royal Oak types have been fitted Together with the calibre 2121 motion, which was dependant on the calibre 2120 created by Audemars Piguet in 1967, the world’s thinnest self-winding motion from the period with date sign, and an Over-all height of three.05mm. The calibre 2121 was also equipped https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/