The 1st Royal Oak products were fitted Together with the calibre 2121 movement, which was based upon the calibre 2120 produced by Audemars Piguet in 1967, the world’s thinnest self-winding movement on the period with day indication, and an Total top of three.05mm. The calibre 2121 was also Geared up https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/