The main Royal Oak models ended up fitted with the calibre 2121 movement, which was based on the calibre 2120 created by Audemars Piguet in 1967, the globe’s thinnest self-winding motion from the period with date indication, and an Total top of three.05mm. The calibre 2121 was also Geared up https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/