The primary Royal Oak models were being equipped With all the calibre 2121 motion, which was based upon the calibre 2120 produced by Audemars Piguet in 1967, the globe’s thinnest self-winding motion of the era with date sign, and an overall peak of 3.05mm. The calibre 2121 was also Geared https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/