The main Royal Oak versions ended up equipped With all the calibre 2121 motion, which was according to the calibre 2120 made by Audemars Piguet in 1967, the world’s thinnest self-winding movement on the period with date sign, and an In general height of three.05mm. The calibre 2121 was also https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/