The 1st Royal Oak products had been fitted With all the calibre 2121 movement, which was according to the calibre 2120 made by Audemars Piguet in 1967, the whole world’s thinnest self-winding motion of the period with date sign, and an In general top of 3.05mm. The calibre 2121 was https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/