The main Royal Oak styles were fitted While using the calibre 2121 movement, which was determined by the calibre 2120 made by Audemars Piguet in 1967, the world’s thinnest self-winding movement with the period with day indicator, and an All round height of three.05mm. The calibre 2121 was also Geared https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/