Audemars Piguet · Royal Oak Offshore

Strap for Royal Oak OffShore 26231 Lady Chronograph Stainless Steel / Silver / Diamond

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

Integrated bracelet

The Audemars Piguet Royal Oak Offshore 26231ST.ZZ.D010CA.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 diameter37 mm
Reference26231ST.ZZ.D010CA.01
FamilyRoyal Oak Offshore
MovementAudemars Piguet caliber AP 2385 hours, minutes, small seconds | date | Chronograph, column wheel
Year2018
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

The Royal Oak Offshore 26231ST.ZZ.D010CA.01, seen from the bench

The Royal Oak Offshore represents the sporty evolution of the Audemars Piguet Royal Oak line. It features the automatic AP 2385 caliber with hour, minute, small seconds, date and column-wheel chronograph functions. The reference 26231ST.ZZ.D010CA.01 has a stainless steel case with the characteristic octagonal bezel and chronograph pushers integrated into the design.

Frequently asked questions

Can a strap be fitted to the Royal Oak Offshore 26231ST.ZZ.D010CA.01?

The bracelet is integrated into the case: there are no standard lugs to attach an off-the-shelf strap. The attachment is part of the watch's own architecture. To fit a strap, it must be built to measure, directly on the watch, in the atelier.

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

I work exclusively by appointment at <a href="/pages/casati-booking">Casati Milano</a>, at Via XX Settembre 15 in Milan. I bring the watch to the bench and take measurements directly from the case: every millimetre of the attachment is shaped by hand to follow the hexagonal profile of the Offshore. I don't use generic templates. Each piece is built from scratch on that specific watch.

Which leather do I recommend for this Royal Oak Offshore?

For a watch with this character — sporting yet built on substantial proportions — I prefer Mississippi Alligator. It holds its own visually against the case without disappearing. If you want something that grows with you over time, Barenia develops a patina that honestly and beautifully records years of wear.

How long does a well-made strap last?

A strap built with top-grade leather and solid stitching easily lasts five to seven years of regular use. It depends greatly on how you care for it: avoid prolonged exposure to water, let it breathe, rotate it if you have more than one. Barenia in particular improves with age — the marks of use become part of its character, not flaws.

What makes the Offshore different from the original Royal Oak?

The Royal Oak Offshore was born in 1993 as a larger, bolder response to Gérald Genta's 1972 design. The oversized case and exposed hexagonal screws are not decorative details: they openly declare the structure. This steel reference with its polished-satin finish carries that logic forward without softening it.

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