Audemars Piguet · Royal Oak

Strap for Royal Oak 41 Double Balance Wheel Openworked White Gold / Baguette Blue Sapphire

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

Integrated bracelet

The Audemars Piguet Royal Oak 15412BC.SS.1220BC.02 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
Reference15412BC.SS.1220BC.02
FamilyRoyal Oak
MovementAudemars Piguet caliber AP 3132 hours, minutes, seconds | skeleton, double balance
Year2024
CaseWhite 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 15412BC.SS.1220BC.02, seen from the bench

The Royal Oak was introduced in 1972 as the first luxury sports watch in steel. The reference 15412BC.SS.1220BC.02 is equipped with the automatic AP 3132 caliber with a double balance wheel and a skeletonized construction that displays the hours, minutes, and seconds. The execution features a stainless steel case and bracelet with the characteristic octagonal bezel.

Frequently asked questions

Can a strap be fitted to the Royal Oak 15412BC.SS.1220BC.02?

The bracelet is integrated into the case: there is no standard lug where a traditional strap can be attached. The attachment is part of the watch's own architecture. For those who wish to switch to leather, I build each piece directly on the watch, at the atelier, bespoke.

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

I work exclusively through <a href="/pages/casati-booking">Casati Milano</a>, by appointment, at Via XX Settembre 15 in Milan. I bring the watch to the bench and take measurements directly from the original case: every connector is shaped by hand to integrate smoothly and invisibly. There are no templates — each strap is built from scratch on that specific piece.

Which leather do I recommend for this model?

For a Royal Oak in white gold, I choose Mississippi alligator with symmetrical scales, in slate grey or midnight blue. White gold has a cold, understated light: it calls for a leather with visual structure that does not shout. Alligator holds that dialogue without overpowering it.

How long does a well-made strap last?

A strap crafted with quality leather and solid stitching easily lasts five to seven years of regular use. Leather ages: alligator develops a patina that improves with time, while Barenia softens and takes on a unique colour. Care is straightforward — keep it away from prolonged exposure to water and let it breathe between wearings.

What makes the Royal Oak so different from other sports watches in gold?

In 1972, Gérald Genta proposed something that simply did not exist: a sports watch with an octagonal case, exposed hexagonal screws and an integrated bracelet, all in gold. At the time, it was a provocation. Today, that sculptural geometry is still recognisable at a glance, without showing any logo. It is rare for an idea to hold up so well after fifty years.

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