Audemars Piguet
Audemars Piguet Royal Oak Perpetual Calendar Openworked 41 Black Ceramic 26585CE.OO.1225CE.01
The Audemars Piguet Royal Oak Perpetual Calendar Openworked 41 Black Ceramic (reference 26585CE.OO.1225CE.01) is a 41 mm Black ceramic / titanium watch with a skeleton dial. It runs on the automatic caliber 5135 with a 40-hour power reserve and is water resistant to 20 m. It was introduced in 2019.
Specifications
Case
- Reference
- 26585CE.OO.1225CE.01
- Collection
- Royal Oak
- Case size
- 41 mm
- Thickness
- 9.9 mm
- Case material
- Black ceramic / titanium
- Case shape
- Round
- Crystal
- Sapphire
- Water resistance
- 20 m
- Bracelet / strap
- Integrated bracelet, black ceramic
Dial and bezel
- Dial
- Skeleton
- Bezel
- Octagonal, screwed
Movement
- Movement
- Automatic
- Caliber
- 5135 (base 5134)
- Power reserve
- 40 hours
- Frequency
- 19,800 vph
- Jewels
- 38
- Functions
- Perpetual calendar, Moon phase, Skeleton
Production
- Production
- 2019 – today
How it compares within the Royal Oak family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| 26585CE.OO.1225CE.01 (This watch) | 41 mm | Black ceramic / titanium | Skeleton | 5135 | 2019– |
| 15510ST.OO.1320ST.10 | 41 mm | Stainless steel | Grey | 4302 | 2023– |
| 16202XT.OO.1240XT.01 | 39 mm | Titanium and bulk metallic glass | Red | 7121 | 2023– |
| 26240BC.GG.1324BC.02 | 41 mm | White gold | Blue | 4401 | 2023– |
| 26240BC.OO.1320BC.01 | 41 mm | White gold | Purple | 4401 | 2023– |
| 26240BC.OO.1320BC.04 | 41 mm | White gold | Blue | 4401 | 2025– |
| 26240BC.SS.1320BC.01 | 41 mm | White gold | Blue | 4401 | 2023– |
| 26585XT.OO.1220XT.01 | 41 mm | Titanium / BMG | Skeleton | 5135 | 2025– |
| 26586XT.OO.1240XT.01 | 41 mm | Titanium / BMG | Pink | 5133 | 2026– |
About the Royal Oak family
The Royal Oak was introduced in 1972 with ref. 5402, a steel watch designed by Gérald Genta with an octagonal bezel held by eight hexagonal screws, a Tapisserie-patterned dial and an integrated bracelet. It established the idea of a luxury sports watch in steel.
The extra-thin 39 mm models, such as ref. 15202 and the ref. 16202 of 2022 with caliber 7121, are the direct descendants of the original. Other key families include the 41 mm Selfwinding 15500 and 15510, the chronographs such as ref. 26240, perpetual calendars such as ref. 26574 and many gold, ceramic and titanium versions. Dealers read the full reference to confirm case material and dial, and check for polishing, which can soften the case's sharp edges.
Quick answers
- What size is the Audemars Piguet Royal Oak Perpetual Calendar Openworked 41 Black Ceramic 26585CE.OO.1225CE.01?
- The Audemars Piguet Royal Oak Perpetual Calendar Openworked 41 Black Ceramic 26585CE.OO.1225CE.01 has a 41 mm case, 9.9 mm thick.
- What movement does the Audemars Piguet Royal Oak Perpetual Calendar Openworked 41 Black Ceramic 26585CE.OO.1225CE.01 use?
- It uses the automatic caliber 5135, with a 40-hour power reserve.
- How water resistant is the Audemars Piguet Royal Oak Perpetual Calendar Openworked 41 Black Ceramic 26585CE.OO.1225CE.01?
- It is water resistant to 20 metres.
- When did the Audemars Piguet Royal Oak Perpetual Calendar Openworked 41 Black Ceramic 26585CE.OO.1225CE.01 come out?
- It was introduced in 2019.
- What is the Audemars Piguet Royal Oak Perpetual Calendar Openworked 41 Black Ceramic 26585CE.OO.1225CE.01 made of?
- The case is Black ceramic / titanium. Bracelet or strap: Integrated bracelet, black ceramic.
Catalog facts checked September 2026.