The main Royal Oak models were equipped While using the calibre 2121 movement, which was depending on the calibre 2120 developed by Audemars Piguet in 1967, the globe’s thinnest self-winding movement with the period with day indication, and an Over-all peak of three.05mm. The calibre 2121 was also Geared up https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/