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· Royal Oak

Perpetual Calendar Openworked

26585CE.OO.1225CE.01

Diameter
41mm
Thickness
9.9mm
Size
Large
Lug to lug
50.8mm
Water resistance
20m
Movement
Audemars Piguet 5135
Type
Integrated Sports
Case material
Ceramic
Case shape
Round
Dial
Skeleton
Dial finish
Skeletonized, Gradient
Complications
Perpetual Calendar, Moon Phase
Crystal
Sapphire crystal (glareproofed); sapphire dial
Power reserve
40h
Straps
Integrated Bracelet
Production
In production
Origin
Swiss (Heritage)
Era
Contemporary
View on audemarspiguet.com ↗

Reviews

Reviews of the Royal Oak line

  • Audemars Piguet Royal Oak Perpetual Calendar 25820ST.OO.0944ST.03 Watch Review

    The 1916 Company · Jun 11, 2026 · 7:40

    Watch from 0:13

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