The very first Royal Oak versions had been equipped Using the calibre 2121 movement, which was dependant on the calibre 2120 produced by Audemars Piguet in 1967, the whole world’s thinnest self-winding motion in the era with date indication, and an Total height of 3.05mm. The calibre 2121 was also https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/