Audemars Piguet · Royal Oak

Strap for Royal Oak 26313 Chronograph Bucherer Two Tone Bucherer 125th Anniversary

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

Integrated bracelet

The Audemars Piguet Royal Oak 26313SR.ZZ.D005CR.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 diameter39 mm
Reference26313SR.ZZ.D005CR.01
FamilyRoyal Oak
MovementAudemars Piguet caliber AP 2385 Hours, Minutes, Small seconds | Date | Chronograph, Column wheel
Year2013 - 2013
CaseRose Gold, Stainless 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 26313SR.ZZ.D005CR.01, seen from the bench

The Royal Oak chronograph is powered by the automatic AP 2385 caliber with column-wheel and functions of hours, minutes, small seconds, date and chronograph. Reference 26313SR.ZZ.D005CR.01 represents a variant of the sports collection introduced by Audemars Piguet in 1972. The movement offers date indication in addition to the traditional chronograph functions.

Frequently asked questions

Can a strap be fitted to the Audemars Piguet Royal Oak 26313SR.ZZ.D005CR.01?

Not a standard one: the attachment is an integral part of the case design, with lugs that require a bespoke adaptation. A strap is entirely possible, built directly on the watch by <a href="/pages/casati-booking">Casati Milano</a>, where every dimension is taken from the client's actual piece before production begins.

How does the bespoke strap-making process work for this model?

The watch is brought physically to the atelier, where the real geometry of the lugs, the internal curvature and the fitting profile are all measured on the piece itself. The strap is then constructed to these exact dimensions, with the client choosing the leather, finish, buckle or deployant clasp, and the proportions best suited to their wrist. The result is a strap calibrated to the watch, not to a nominal size.

Which leather best suits the character of the Royal Oak 26313SR.ZZ.D005CR.01?

The steel and rose gold combination of this Royal Oak lends itself to several approaches: a midnight blue or slate grey alligator complements both materials without overpowering either, while a black box-calf with a polished finish reinforces the metallic precision of the case. Those wishing to enhance the rose gold may consider a cognac alligator, whose grain and natural patina echo the depth of the precious metal.

How long does a well-made bespoke strap last?

A strap built from selected leathers with reinforced stitching and tailored to the specific lugs of the watch can last many years with ordinary care. Longevity depends on the leather type, daily use and maintenance: high-quality hides develop a patina over time that enriches their appearance rather than degrading it. A properly made strap improves with age.

What is the significance of the column wheel in the AP 2385 calibre of the Royal Oak chronograph?

The column wheel is the most refined control system for a chronograph movement: unlike a cam-and-lever arrangement, it provides more precise actuation, a crisper tactile response on the pushers and reduced wear over time. In the AP 2385 calibre this constructional choice reflects Audemars Piguet's manufacture philosophy, applying grand complication standards to the integrated movements of the Royal Oak and confirming the coherence between aesthetics and internal engineering.

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