The initial Royal Oak types were equipped With all the calibre 2121 motion, which was depending on the calibre 2120 designed by Audemars Piguet in 1967, the world’s thinnest self-winding motion on the era with date indication, and an overall top of three.05mm. The calibre 2121 was also Outfitted having https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/