Audemars Piguet
Audemars Piguet Royal Oak Selfwinding Perpetual Calendar 38 150th Anniversary Stainless Steel 26684ST.OO.1356ST.02
The Audemars Piguet Royal Oak Selfwinding Perpetual Calendar 38 150th Anniversary Stainless Steel (reference 26684ST.OO.1356ST.02) is a 38 mm stainless steel watch with a light blue dial. It runs on the automatic caliber 7136 with a 55-hour power reserve and is water resistant to 50 m. It was introduced in 2025.
Specifications
Case
- Reference
- 26684ST.OO.1356ST.02
- Collection
- Royal Oak
- Case size
- 38 mm
- Thickness
- 9.4 mm
- Case material
- Stainless steel
- Crystal
- Sapphire
- Water resistance
- 50 m
- Bracelet / strap
- Stainless steel
Dial and bezel
- Dial
- Light blue
Movement
- Movement
- Automatic
- Caliber
- 7136
- Power reserve
- 55 hours
- Frequency
- 28,800 vph
- Functions
- Perpetual calendar
Production
- Production
- 2025 – today (limited)
- Limited edition
- 150 pieces
Dial versions
This reference was made with these dials and finishes.
26684ST.OO.1356ST.02 Light blue
Grande Tapisserie; snailed counters; anniversary engraving
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 |
|---|---|---|---|---|---|
| 26684ST.OO.1356ST.02 (This watch) | 38 mm | Stainless steel | Light blue | 7136 | 2025– |
| 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 Perpetual Calendar 38 150th Anniversary Stainless Steel 26684ST.OO.1356ST.02?
- The Audemars Piguet Royal Oak Selfwinding Perpetual Calendar 38 150th Anniversary Stainless Steel 26684ST.OO.1356ST.02 has a 38 mm case, 9.4 mm thick.
- What movement does the Audemars Piguet Royal Oak Selfwinding Perpetual Calendar 38 150th Anniversary Stainless Steel 26684ST.OO.1356ST.02 use?
- It uses the automatic caliber 7136, with a 55-hour power reserve.
- How water resistant is the Audemars Piguet Royal Oak Selfwinding Perpetual Calendar 38 150th Anniversary Stainless Steel 26684ST.OO.1356ST.02?
- It is water resistant to 50 metres.
- Is the Audemars Piguet Royal Oak Selfwinding Perpetual Calendar 38 150th Anniversary Stainless Steel 26684ST.OO.1356ST.02 still in production?
- Limited.
- When did the Audemars Piguet Royal Oak Selfwinding Perpetual Calendar 38 150th Anniversary Stainless Steel 26684ST.OO.1356ST.02 come out?
- It was introduced in 2025.
- What is the Audemars Piguet Royal Oak Selfwinding Perpetual Calendar 38 150th Anniversary Stainless Steel 26684ST.OO.1356ST.02 made of?
- The case is stainless steel. Bracelet or strap: Stainless steel.
Catalog facts checked October 2026.