The first Royal Oak versions ended up equipped with the calibre 2121 movement, which was depending on the calibre 2120 formulated by Audemars Piguet in 1967, the whole world’s thinnest self-winding motion with the period with day indication, and an Total top of 3.05mm. The calibre 2121 was also Outfitted https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/