The 1st Royal Oak products have been equipped Using the calibre 2121 movement, which was depending on the calibre 2120 created by Audemars Piguet in 1967, the world’s thinnest self-winding movement of the era with date indicator, and an overall peak of 3.05mm. The calibre 2121 was also Geared up https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/