Audemars Piguet has unveiled the Royal Oak Perpetual Calendar in stainless steel and 18K pink gold. The new blue dial creates a subtle contrast with the light.
Royal Oak Perpetual Calendar /41 mm
The subdials and inner bezel of the "Grande Tapisserie" dial are the signature blue of the original Royal Oak, a hue referred to in the Manufacture's archives as "Night Blue, Cloud 50." The rest of the dial is light blue, and these two hues shine with refined contrast and light reflection. The dial is balanced with four subdials: week, day of the week, date, astronomical moon (which only needs to be corrected once every 122 years and 46 days), month, leap year, hours, and minutes.
New Shades of Blue
The Royal Oak Perpetual Calendar's 41mm case is incredibly thin, measuring just 9.5mm thick. It's available in stainless steel and 18K pink gold, both of which feature hand-finished satin-brushed and polished finishes. Both are paired with matching bracelets with AP folding clasps.
Automatic (cal. 5134). 38 jewels. 19,800 vph. Power reserve approximately 40 hours. Stainless steel (diameter 41mm). Water resistant to 20m. 858 million yen (tax included).
Automatic (cal. 5134). 38 jewels. 19,800 vph. Power reserve approximately 40 hours. 18KPG (diameter 41mm). Water resistant to 20m. 1254 million yen (tax included).
Automatic caliber 5134
By studying the movement's construction, the watchmakers have created a caliber that is just 4.3 mm thin. This is possible by redesigning many of its components, including the openworked 22K gold oscillating weight. The rotor's thickest point is positioned close to its outer edge, and is absorbed into a recess inside the channel that surrounds the movement, reducing its thickness.

The 5134 calibre is a sophisticated mechanism that embodies the Manufacture's expertise. The calendar automatically takes into account the length and width of the month, ensuring the correct date display, even in leap years. When the watch is properly and fully wound, it will not require manual correction until the year 2100, according to the Gregorian calendar*.
The movement's thickness has also been further reduced by suspending the barrel. The Caliber 5134 is visible through the sapphire case back, where it features layers of beautiful finishes, including Côtes de Genève, circular graining, circular satin, and polished chamfers.
*The Gregorian calendar excludes three leap years every 400 years to align with solar time, meaning that the 29th of February is excluded in years divisible by 100 and kept in years divisible by 400. As a result, the year 2100 is not a leap year, and the perpetual calendar mechanism will need to be manually adjusted to advance to the next month after February 28th.
Contact info: Audemars Piguet Japan Tel. 03-6830-0000