The 12 o’clock moon phase of the new ultra-thin prototype pays homage to the Company’s first perpetual calendar wristwatch that was introduced in year 1955.
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 record shattering 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 self-winding perpetual calendar on the market today.
Self-winding manufacture: Calibre 5133
Total diameter: 32.00 mm (14 ¾ lignes)
Total thickness: 2.89 mm
Number of jewels: 37
Number of parts: 256
Minimal guaranteed power reserve: 40 h
Frequency of balance wheel 2.75 Hz (=19,800 vibrations/hour)
950 platinum case, glareproofed sapphire crystal and caseback, water-resistant to 20 m, RD#2 engraved on the caseback
Blue dial with “Grande Tapisserie” pattern, blue counters, white gold applied hour-markers and Royal Oak hands with luminescent coating
950 platinum bracelet with AP folding clasp
Perpetual calendar with day, date, astronomical moon, month, leap year, night and day indication, hours and minutes