Audemars Piguet
Audemars Piguet Royal Oak Perpetual Calendar 41 26574ST.OO.1220ST.02
The Audemars Piguet Royal Oak Perpetual Calendar 41 (reference 26574ST.OO.1220ST.02) is a 41 mm stainless steel watch with a blue dial. It runs on the automatic caliber 5134 with a 40-hour power reserve and is water resistant to 20 m. It was made from 2015 to 2021.
Specifications
Case
- Reference
- 26574ST.OO.1220ST.02
- Collection
- Royal Oak
- Case size
- 41 mm
- Thickness
- 9.5 mm
- Case material
- Stainless steel
- Case shape
- Round
- Crystal
- Sapphire
- Water resistance
- 20 m
- Bracelet / strap
- Integrated bracelet, stainless steel
Dial and bezel
- Dial
- Blue
- Bezel
- Octagonal, screwed
Movement
- Movement
- Automatic
- Caliber
- 5134 (base 2120)
- Power reserve
- 40 hours
- Frequency
- 19,800 vph
- Jewels
- 38
- Functions
- Perpetual calendar, Moon phase, Day-date
Production
- Production
- 2015–2021
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 |
|---|---|---|---|---|---|
| 26574ST.OO.1220ST.02 (This watch) | 41 mm | Stainless steel | Blue | 5134 | 2015–2021 |
| 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 41 26574ST.OO.1220ST.02?
- The Audemars Piguet Royal Oak Perpetual Calendar 41 26574ST.OO.1220ST.02 has a 41 mm case, 9.5 mm thick.
- What movement does the Audemars Piguet Royal Oak Perpetual Calendar 41 26574ST.OO.1220ST.02 use?
- It uses the automatic caliber 5134, with a 40-hour power reserve.
- How water resistant is the Audemars Piguet Royal Oak Perpetual Calendar 41 26574ST.OO.1220ST.02?
- It is water resistant to 20 metres.
- Is the Audemars Piguet Royal Oak Perpetual Calendar 41 26574ST.OO.1220ST.02 still in production?
- No. It was made until 2021.
- When did the Audemars Piguet Royal Oak Perpetual Calendar 41 26574ST.OO.1220ST.02 come out?
- It was introduced in 2015 and made until 2021.
- What is the Audemars Piguet Royal Oak Perpetual Calendar 41 26574ST.OO.1220ST.02 made of?
- The case is stainless steel. Bracelet or strap: Integrated bracelet, stainless steel.
Catalog facts checked September 2026.