The 1st Royal Oak products had been fitted While using the calibre 2121 motion, which was determined by the calibre 2120 developed by Audemars Piguet in 1967, the globe’s thinnest self-winding motion of the era with day indicator, and an overall top of three.05mm. The calibre 2121 was also equipped https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/