The main Royal Oak products were equipped With all the calibre 2121 motion, which was based on the calibre 2120 formulated by Audemars Piguet in 1967, the globe’s thinnest self-winding movement of the period with date indicator, and an Over-all top of 3.05mm. The calibre 2121 was also Outfitted with https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/