The first Royal Oak types have been fitted with the calibre 2121 motion, which was based on the calibre 2120 produced by Audemars Piguet in 1967, the planet’s thinnest self-winding motion of the period with day indicator, and an In general peak of three.05mm. The calibre 2121 was also Outfitted https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/