The main Royal Oak styles were equipped Along with the calibre 2121 motion, which was depending on the calibre 2120 designed by Audemars Piguet in 1967, the world’s thinnest self-winding movement of the period with day sign, and an Over-all top of three.05mm. The calibre 2121 was also Outfitted by https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/