Audemars Piguet · Royal Oak
Strap for Royal Oak Automatic 29 Hour - Minute Stainless Steel / Blue
Integrated bracelet: measurements, the most common questions, and the way to a made-to-measure strap.
Integrated bracelet
The Audemars Piguet Royal Oak 8638ST.00.0424ST.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.
The Royal Oak 8638ST.00.0424ST.01, seen from the bench
Frequently asked questions
Can a strap be fitted to the Royal Oak 8638ST.00.0424ST.01?
Not in the conventional sense. The bracelet is integrated into the case with proprietary hidden attachments between the case and the links: a standard strap has no way of connecting. I work on this watch only in the atelier, building each terminal by hand directly on the watch.
How does the bespoke strap service work for this Royal Oak?
Everything goes through <a href="/pages/casati-booking">Casati Milano</a>, by appointment only, at Via XX Settembre 15 in Milan. I bring the watch to the bench, take measurements directly from the case and shape the terminals to respect the exact angles of the octagonal case. I do not work from photographs or technical sheets: the watch must be in front of me.
Which leather do I recommend for this Royal Oak?
I recommend naturally aged Barenia. The Royal Oak has a dual character — sporting in its geometry, refined in its finishing — and Barenia follows it over time with the same consistency. It develops a patina that tells the story of wear, without ever looking out of place against the satin-brushed and polished steel of the case.
How long does a well-made strap last on a watch like this?
With a first-rate leather and basic care, I expect five to seven years of regular use. That means keeping it away from prolonged water exposure, conditioning the leather twice a year with a natural grease and letting it breathe. A well-kept Barenia does not degrade: it transforms, and often improves.
What makes the Royal Oak's design so recognisable even today?
In 1972, Gérald Genta did something simple and radical: he took steel, a material then considered ordinary, and worked it as if it were precious. The eight visible hexagonal screws, the integrated bezel, the Tapisserie dial — every element is functional and declared. I have seen many sports watches over the years, but few have a constructional logic this coherent from the inside out.
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
