The primary Royal Oak products were fitted While using the calibre 2121 motion, which was according to the calibre 2120 produced by Audemars Piguet in 1967, the entire world’s thinnest self-winding movement on the period with day sign, and an All round height of 3.05mm. The calibre 2121 was also https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/