The first Royal Oak versions were being equipped While using the calibre 2121 movement, which was based upon the calibre 2120 produced by Audemars Piguet in 1967, the earth’s thinnest self-winding movement of your period with day sign, and an In general peak of three.05mm. The calibre 2121 was also https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/