Audemars Piguet · Royal Oak

Strap for Royal Oak 15400 Pink Gold Boutique Edition

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

Integrated bracelet

The Audemars Piguet Royal Oak 15400OR.OO.1220OR.03 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 diameter41 mm
Reference15400OR.OO.1220OR.03
FamilyRoyal Oak
MovementAudemars Piguet caliber AP 3120 hours, minutes, seconds | date
Year2012 - 2019
CaseRose Gold

Spring bar

Swiss Standard universal spring bars

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

The Royal Oak 15400OR.OO.1220OR.03, seen from the bench

The Royal Oak was introduced in 1972 as the first luxury sports watch in steel. It features the automatic AP 3120 caliber with hour, minute, second and date functions. The case displays the iconic octagonal design with exposed bezel secured by eight visible screws.

Frequently asked questions

Can a standard strap be fitted to the Royal Oak 15400OR.OO.1220OR.03?

No. The bracelet is integrated into the case: there are no standard lugs to attach an aftermarket strap. The transition between case and bracelet is a core part of Genta's original design. The only viable option is to have a strap made to measure, directly on the watch, in the atelier.

How does the bespoke strap process work for this Royal Oak?

I work by appointment only, at <a href="/pages/casati-booking">Casati Milano</a>, Via XX Settembre 15, Milan. The watch comes to the bench with me, I take measurements directly from the case and shape the terminals by hand to fit the octagonal geometry of the Royal Oak. There is no template — every strap is built from scratch for that specific piece.

Which leather do I recommend for this model?

For a Royal Oak in pink gold, my choice goes to Mississippi alligator with a large scale. Pink gold has a warm, soft visual tone: a generous scale complements it without competing. Natural alligator ages with character, which feels right on a watch with this kind of history.

How long does a well-made strap last?

With quality leather and solid construction, I count on five to eight years of regular wear. Care makes all the difference: avoid prolonged exposure to water, apply a neutral cream two or three times a year. Good leather does not degrade — it transforms. After a few years, a well-kept alligator strap tells you something about the person who wore it.

What makes the Royal Oak in pink gold different from the steel versions?

Steel has a coolness that balances the sportiness of the design. Pink gold shifts that balance towards something more intimate, almost private. It does not change the original character of the watch, but it inflects it differently: less assertive, more personal. I have seen steel pieces worn like a uniform — this one you wear as a deliberate choice.

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.

Request an appointment →

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