The Wristwatch Field Guide

Audemars Piguet Royal Oak Perpetual Calendar Openworked Black Ceramic

26585CE.OO.1225CE.01

The Audemars Piguet Royal Oak Perpetual Calendar Openworked Black Ceramic is a current-production integrated bracelet watch with a black black ceramic case. It measures 41.0 mm across, and is water resistant to 20 m. Inside is the AP 5135 automatic movement. Complications: Perpetual calendar. Brand origin: Switzerland.

Titanium and ceramic integrated bracelet watchesCeramicBlackDisplay back
Reference
26585CE.OO.1225CE.01
Type
Integrated bracelet
Price
Case diameter
41.0 mm
Thickness
Lug-to-lug
Water resistance
20 m
Weight
Origin
Switzerland
Movement
Automatic
Caliber
AP 5135
Power reserve
Complications
Perpetual calendar
Material
Ceramic
Grade / type
Black ceramic
Colour
Black
Hardness
Construction
Assembled
Surface treatment
Caseback
Nickel-free
Not verified (contact-point materials not all confirmed)
Bracelet / strap
Black ceramic bracelet
Matching bracelet
Standard
Crystal
Sapphire
Display back
Yes
Dial
Openworked sapphire
Lume
Availability
Offered
Status
Current
Medium confidence Verified Jul 2026 Source: Audemars Piguet Maker / listing ↗
Facts are free to cite with a link.
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Frequently asked questions

What is the case material of the Audemars Piguet Royal Oak Perpetual Calendar Openworked Black Ceramic?

The Audemars Piguet Royal Oak Perpetual Calendar Openworked Black Ceramic has a black black ceramic case. It is recorded at medium confidence pending a maker-stated material.

What size is the Audemars Piguet Royal Oak Perpetual Calendar Openworked Black Ceramic?

It is 41.0 mm in diameter, and water resistant to 20 m.

How much does the Audemars Piguet Royal Oak Perpetual Calendar Openworked Black Ceramic cost, and is it available?

It is current-production; the guide does not list a price for it.

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