Royal Oak Perpetual Calendar 38 Stainless Steel / Light Blue

In Context

At 38 mm it sits just under the modern norm — the band that suits the widest spread of wrists. At 9.4 mm thick it is about average for a modern wristwatch. 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. 50 m covers rain and hand-washing comfortably; it is not a watch to swim in.

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.

26684ST.OO.1356ST.01 stands on its own in this catalogue — no other reference here shares its base number. It pairs a blue dial with a stainless steel case. It was a limited edition. Beyond the time it carries a date, a moon phase and a perpetual calendar.

The caliber 7136 is an automatic movement with perpetual calendar, introduced in 2025. It displays hours, minutes, day, date, month, leap year, and moon phase. The movement measures 29.6mm in diameter and 4.1mm in height. It is composed of 413 parts, with 41 jewels. The balance beats at a frequency of 28,800 vph (4 Hz). The power reserve is 55 hours.

1 other watch in the library runs the Audemars Piguet AP 7136.

Audemars Piguet

Royal Oak Perpetual Calendar 38 Pink Gold / Pink

26684OR.OO.1356OR.01 · 38 mm