Audemars Piguet
Audemars Piguet Royal Oak Selfwinding Chronograph 41 26240ST.OO.1320ST.01
The Audemars Piguet Royal Oak Selfwinding Chronograph 41 (reference 26240ST.OO.1320ST.01) is a 41 mm stainless steel watch with a blue dial. It runs on the automatic caliber 4401 with a 70-hour power reserve and is water resistant to 50 m. It was made from 2022 to 2022.
Specifications
Case
- Reference
- 26240ST.OO.1320ST.01
- Collection
- Royal Oak
- Case size
- 41 mm
- Thickness
- 12 mm
- Case material
- Stainless steel
- Case shape
- Round
- Crystal
- Sapphire
- Water resistance
- 50 m
- Bracelet / strap
- Integrated bracelet, stainless steel
Dial and bezel
- Dial
- Blue
- Bezel
- Octagonal, screwed
Movement
- Movement
- Automatic
- Caliber
- 4401
- Power reserve
- 70 hours
- Frequency
- 28,800 vph
- Jewels
- 40
- Functions
- Flyback chronograph, Date
Production
- Production
- 2022–2022
Dial versions
This reference was made with these dials and finishes.
26240ST.OO.1320ST.01 Blue
Grande Tapisserie
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 |
|---|---|---|---|---|---|
| 26240ST.OO.1320ST.01 (This watch) | 41 mm | Stainless steel | Blue | 4401 | 2022–2022 |
| 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 Selfwinding Chronograph 41 26240ST.OO.1320ST.01?
- The Audemars Piguet Royal Oak Selfwinding Chronograph 41 26240ST.OO.1320ST.01 has a 41 mm case, 12 mm thick.
- What movement does the Audemars Piguet Royal Oak Selfwinding Chronograph 41 26240ST.OO.1320ST.01 use?
- It uses the automatic caliber 4401, with a 70-hour power reserve.
- How water resistant is the Audemars Piguet Royal Oak Selfwinding Chronograph 41 26240ST.OO.1320ST.01?
- It is water resistant to 50 metres.
- Is the Audemars Piguet Royal Oak Selfwinding Chronograph 41 26240ST.OO.1320ST.01 still in production?
- No. It was made until 2022.
- When did the Audemars Piguet Royal Oak Selfwinding Chronograph 41 26240ST.OO.1320ST.01 come out?
- It was introduced in 2022 and made until 2022.
- What is the Audemars Piguet Royal Oak Selfwinding Chronograph 41 26240ST.OO.1320ST.01 made of?
- The case is stainless steel. Bracelet or strap: Integrated bracelet, stainless steel.
Catalog facts checked October 2026.