The initial Royal Oak designs ended up equipped Along with the calibre 2121 motion, which was depending on the calibre 2120 produced by Audemars Piguet in 1967, the earth’s thinnest self-winding movement of your period with date indication, and an overall peak of 3.05mm. The calibre 2121 was also equipped https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/