The 1st Royal Oak models had been equipped Along with the calibre 2121 motion, which was based on the calibre 2120 designed by Audemars Piguet in 1967, the entire world’s thinnest self-winding movement on the period with date indication, and an General height of 3.05mm. The calibre 2121 was also https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/