Royal Oak Perpetual Calendar Ultra Titanium - BMG / Ivory - Eastern Arabic

In Context

At 41 mm it is sized to the current mainstream: 40 mm is the median across every watch measured in this catalogue. The 6.32 mm case is genuinely slim and goes under a shirt cuff without argument. The case back is open, so the movement is visible without taking the watch apart, and the sapphire crystal will resist everything short of deliberate abuse. Rated to 20 m, it is protected against rain and splashes and nothing beyond that.

The movement winds itself from the motion of your wrist. 40 hours of reserve carries it overnight, but not through a weekend in a drawer.

26586XT.OO.1240XT.99 stands on its own in this catalogue — no other reference here shares its base number. It pairs a ivory gradient dial with a titanium, bmg case. It was a limited edition. Introduced in 2023. Beyond the time it carries a perpetual calendar.

Audemars Piguet caliber 5133 is one of the worlds thinnest self-winding movements with perpetual calendar. To reach this remarkable thinness, the movement's perpetual calendar functions, normally on three different levels, have been re-arranged and merged into one single layer of no more than 0.35mm in thickness. Audemars Piguet developed two patented innovations: the end-of-the-month cam has been integrated to the date wheel, while the month cam has been combined to the month wheel. This movement consists of 256 parts.

3 other watches in the library run the Audemars Piguet 5133.

Audemars Piguet

Royal Oak Perpetual Calendar Ultra Yellow Gold / Champagne

26586BA.OO.1240BA.99 · 41 mm

Audemars Piguet

Royal Oak Perpetual Calendar Ultra Thin Titanium / Gradient Blue

26586TI.OO.1240TI.01 · 41 mm

Audemars Piguet

Royal Oak Perpetual Calendar Ultra Thin Titanium - Platinum / Blue / Bracelet

26586IP.OO.1240IP.01 · 41 mm