The very first Royal Oak styles have been equipped Using the calibre 2121 motion, which was based on the calibre 2120 made by Audemars Piguet in 1967, the globe’s thinnest self-winding movement in the period with day indication, and an All round top of 3.05mm. The calibre 2121 was also https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/