An in-depth look at the Rolex Day-Date's Calibre 3255, covering its 14 patents, the Chronergy escapement for anti-magnetism and efficiency, the 70-hour power reserve, and the Blue Parachrom hairspring. https://medium.com/@arthursmith050396/the-art-of-precision-exploring-the-movement-inside-the-rolex-day-date-932b676de00f