At the Salon International de la Haute Horlogerie 2018 (Geneva, January 15-19), Audemars Piguet is launching a great number of new references in a wide array of colours, material combinations and design features.
Among them, the new Royal Oak RD#2 takes centre stage as the world’s thinnest self-winding perpetual calendar timepiece at just 6.30 mm thick, a new watchmaking record.
This watch is only the second Audemars Piguet timepiece with “RD” in its name. The first was the Royal Oak Concept RD#1 Acoustic Research that was introduced at the end of 2014 (we wrote about it here).
The development of the new ultra-thin 5133 calibre with perpetual calendar took more than five years. Audemars Piguet had to face a major challenge: to re-engineer a three-storey movement into a single level, making it ultra-thin while combining and re-arranging functions to enhance ergonomy, efficiency and robustness.
Although it is thinner at just 2.89 mm, the new movement maintains the same power reserve of 40 hours and the same frequency (2.75 Hz / 19,800 vibrations per hour) as calibre 5134.
Visible through the glareproofed sapphire crystal caseback, the movement is composed of 256 parts, including the skeletonised central rotor.
The 41 mm case and the beautifully executed bracelet with AP folding clasp are crafted from 950 platinum. In terms of thickness, the redesigned case shaves almost 2 mm off the Royal Oak Extra-Thin Jumbo.
The blue dial is characterized by the typical “Grande Tapisserie” pattern while the moon phase display at 12 o’clock pays homage to the company’s first perpetual calendar wristwatch produced in 1955.
The night/day indicator positioned below the day-of-the-week counter at 9 o’clock is visually balanced by the leap year indicator below the month counter at 3 o’clock, while the date is displayed at 6 o’clock. The white gold applied hour-markers and Royal Oak hands are treated with a luminescent coating.
The Audemars Piguet Royal Oak RD#2 prototype (ref. 26586PT.OO.1240PT.01) is water resistant to 20 metres / 66 feet. audemarspiguet.com
- The history of the Audemars Piguet Royal Oak