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Scan for outdated or missing drivers - takes under a minuteDriver Scan →Repair Windows errors before they cause bigger problemsFix Now →The Audemars Piguet Royal Oak Selfwinding Chronograph reference 26240BC.SS.1320BC.01 pairs an 18-carat white-gold case and bracelet with a bezel set with 32 blue baguette-cut sapphires. Its blue Grande Tapisserie dial, pale-blue chronograph counters and self-winding Calibre 4401 distinguish this gem-set version of the 41 mm Royal Oak chronograph.
What is the Royal Oak Chronograph Baguette Sapphires?
Its full name is the Audemars Piguet Royal Oak Selfwinding Chronograph, reference 26240BC.SS.1320BC.01. The white-gold case and bracelet frame a blue Grande Tapisserie dial with contrasting light-blue counters. On the bezel, 32 baguette-cut blue sapphires total approximately 3.32 carats, according to Audemars Piguet’s official specification.
AP describes the design this way: “A combination of white gold and blue baguette-cut sapphires provide an elegant frame for this chronograph, adorned with a blue “Grande Tapisserie” dial and contrasting light blue counters.”
Case, bezel and dial specifications
| Feature | Specification |
|---|---|
| Reference | 26240BC.SS.1320BC.01 |
| Case and bracelet | 18-carat white gold |
| Case diameter | 41 mm |
| Case thickness | 12.4 mm |
| Bezel | 32 baguette-cut blue sapphires, approximately 3.32 carats total |
| Dial | Blue Grande Tapisserie with light-blue counters |
| Clasp | AP folding clasp |
| Water resistance | 50 m, as specified by AP |
The 50 m figure is the manufacturer’s published rating, not a guarantee about the condition of an individual watch or a recommendation for how to use one. Water resistance can depend on the specific watch’s condition.
#1 Best Overall
- 1.Tube and screw are of the same thickness and strength as what you have on the watch and are made of the highest quality 316L stainless steel just like original.
- 2.It fit all version of Royal Oak Offshore Chronograph including Safari, Alingi, Polaris, Barrichello, Orchard Road, Arnold , Montoya, Jay-Z, Volcano, Offshore Dual Time, Sincere, Rodeo Drive, Monte Napoleone, Worth Avenue, Tantalum, Royal Oak Offshore Scuba Wempe, Royal Oak Offshore Scuba La Boutique in All Versions.
- 3.size: 28mm and 26.5mm;2 sizes available
- 4.packing: 2pcs tubes and 2pcs screws
- 5.Please confirm the model and size of the item suitable for the watch before purchasing to avoid returns/exchanges. If there is a problem with item you receive, please contact us , We should be able to resolve the problem.
Calibre 4401 and the flyback chronograph
AP equips the watch with its self-winding Calibre 4401. The movement provides a flyback chronograph, hours, minutes, small seconds and date. A flyback function lets the wearer stop, reset and restart the chronograph in one action, rather than stopping it and performing separate reset and restart actions.
| Movement detail | AP specification |
|---|---|
| Calibre | 4401, self-winding |
| Functions | Flyback chronograph, hours, minutes, small seconds and date |
| Parts | 381 |
| Jewels | 40 |
| Frequency | 4 Hz |
| Power reserve | 70 hours |
These are the figures listed by Audemars Piguet for this reference; they are technical specifications, not independent test results.
Rank #2
- Compatible With: Audemars Piguet Royal Oak Offshore Chronograph 39Mm, 41Mm And 42Mm Models 15300 15400 26300 26320 15550 15202 15305 Watch Which Has 27Mm Lugs
- Fit Watch With 27Mm At Lugs And You Can Install The Original Buckle Of 18Mm.
- Long Part: 115Mm (4.6 Inch ) Short Part: 70Mm ( 2.8 Inch ) Strap Width At Buckle: 18Mm
- Package Including: 1× Watch Band(Without Buckle)
- Your Satisfaction Is Our Highest Priority. Pls Contact Us If You Have Any Questions, We Will Try Our Best To Serve For You.
How it fits into the history of gem-set Royal Oaks
Gem-set Royal Oaks predate this chronograph, but the historical examples are distinct models rather than direct substitutes or proven ancestors of reference 26240BC.SS.1320BC.01.
- Royal Oak 25694: AP’s archive dates this model to 1990 and records a bezel with 24 baguette-cut diamonds alternating with 16 sapphires. See the AP Chronicles archive entry.
- Royal Oak Offshore 25855SC: AP’s archive describes this as a one-of-a-kind 1997 model with 32 baguette-cut sapphires, sold in France on 16 April 1997. See the AP Chronicles archive entry.
The earlier watches show that sapphire-set Royal Oaks have historical precedents; their case designs, references and details should not be conflated with this 41 mm self-winding chronograph.
Rank #3
Launch timing, price and availability
Monochrome Watches reported on 2 February 2023 that the watch would first be sold exclusively in Japan from May 2023, followed by worldwide availability from July 2023. Those dates describe the announced launch plan, not current stock or production status. The official product page provides no current price or inventory information, and the available information does not establish present retail or secondary-market pricing. For current availability or pricing, check with Audemars Piguet or an authorized dealer.
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Rank #4
- Wacth Band Screw Tube Replacement for the Audemars Piguet Royal Oak Offshore watch case which has 28mm straps.
- It fit all version of Royal Oak Offshore Chronograph including Safari, Alingi, Polaris, Barrichello, Orchard Road, Arnold , Montoya, Jay-Z, Volcano, Offshore Dual Time, Sincere, Rodeo Drive, Monte Napoleone, Worth Avenue, Tantalum, Royal Oak Offshore Scuba Wempe, Royal Oak Offshore Scuba La Boutique in All Versions.
- Size: 28mm
- Packing: 2 pcs tubes and 2 pcs screws
- Material: Stainless Steel
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.




