The initial Royal Oak types were being equipped Using the calibre 2121 movement, which was according to the calibre 2120 designed by Audemars Piguet in 1967, the earth’s thinnest self-winding motion from the period with date indication, and an Over-all height of 3.05mm. The calibre 2121 was also Outfitted having https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/