The 12 O'Clock moon phase of the new ultra-thin prototype pays homage to the company's first perpetual calendar wristwatch that came out in 1955
REINVENTING THE CALENDAR WATCH
Complications and ultra-thin models: two time-honoured Audemars Piguet specialties meet in the Royal Oak RD#2. It has taken five years to develop the new ultra-thin 5133 calibre with perpetual calendar.
The challenge has been to re-engineer a three-storey movement into a single level, making it ultra-thin while combining and re-arranging functions to boost ergonomy, efficiency and robustness. This patented system features a recordshattering 2.89 mm central rotor. At just 6.30 mm, the redesigned case shaves almost 2 mm off the Royal Oak Extra-Thin Jumbo, making the Royal Oak RD#2 the thinnest selfwinding perpetual calendar on the market today.
This is the latest chapter in Audemars Piguet’s quest for world firsts which goes back over a century.