Audemars Piguet · Royal Oak Concept

Strap for Royal Oak Concept Split Second Chronograh GMT Large Date CFT Carbon - Yellow Gold / Skeleton

Integrated bracelet: measurements, the most common questions, and the way to a made-to-measure strap.

Integrated bracelet

The Audemars Piguet Royal Oak Concept 26650FA.OO.D002CA.01 is designed with a bracelet integrated into the case. For a compatible made-to-measure strap, the Casati Milano atelier builds it on your watch.

Case diameter43 mm
Reference26650FA.OO.D002CA.01
FamilyRoyal Oak Concept
MovementAudemars Piguet caliber AP 4407 hours, minutes, Additional 24 hours Hand (adjustable), day / Night Indication | big date | Chronograph, column wheel, Rattrapante
Year2025
CaseCeramic, Yellow Gold, Forged Carbon

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

The Royal Oak Concept 26650FA.OO.D002CA.01, seen from the bench

The Royal Oak Concept 26650FA is a 43mm timepiece from Audemars Piguet's Le Brassus manufacture, combining yellow gold, forged carbon, and black ceramic in a visionary architecture. This model features a complex integrated lug system and represents advanced high watchmaking. Bespoke leather strap customization is available through specialized atelier services.

Frequently asked questions

Can a standard strap be fitted to the Royal Oak Concept 26650FA.OO.D002CA.01?

No, and I say so straight away out of respect for your time. The bracelet is integrated into the case with a patented attachment: no aftermarket strap fits without significant intervention. The only serious option is to build the strap to measure, directly on the watch, in the atelier.

How does the bespoke strap service work for this Royal Oak Concept?

I work at <a href="/pages/casati-booking">Casati Milano</a> by appointment only, at Via XX Settembre 15 in Milan. You bring the watch, I study it at the bench, take measurements from the case itself and build the attachments to that specific geometry. No standard sizing, no compromises.

Which leather would I recommend for this model?

On a watch this radical — black ceramic, forged carbon, yellow gold — I prefer glossy black Mississippi alligator. The black holds its own against the ceramic without disappearing, and the shine plays well with the yellow gold. It is a firm choice: this watch demands character, not neutrality.

How long does a well-made strap last on a watch like this?

With normal care, a hand-stitched alligator strap lasts between five and eight years, sometimes longer. Quality leather does not deteriorate: it ages, shifts in tone, takes on the shape of the wrist. I call that honest patina. The only real enemy is standing water — avoid it.

What truly sets the architecture of this Royal Oak Concept apart from other Royal Oak models?

I have had the chance to study the case at the bench, and the difference is immediate: the multi-layer structure in ceramic, forged carbon and yellow gold is not decorative — it is structural. Each material has a function, not merely an aesthetic role. It is an engineering approach taken to the extreme, and you feel it in the hand.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only