Strap for Royal Oak Ultra Thin Tourbillon Platinum / Diamond

The bracelet attachment is an integral part of the case design and is not compatible with a standard straight-lug strap. A leather strap is entirely possible, however — built bespoke directly on the watch by <a href="/pages/casati-booking">Casati Milano</a>. The process involves taking direct measurements of the lug geometry in the atelier, ensuring the strap is born from the precise proportions of this specific case.

The client brings the watch in person to the <a href="/pages/casati-booking">Casati Milano</a> atelier, where the craftsman records the lug profile, curvature and cross-section directly on the case. Leather, finish, thread colour and clasp type are chosen together. The strap is then hand-built and delivered already mounted on the watch, with no adapters or dimensional compromises.

Matte mississippiensis alligator is the most coherent choice: the regular scale grain of the central belly echoes the «Grande Tapisserie» grid of the dial. Barenia calf, with its fine grain and the patina it develops over time, offers a sobriety that pairs naturally with the brushed platinum. Ostrich is the option for those who wish to introduce an organic texture that softens the strict octagonal geometry.

A strap built from first-selection leathers with hand-stitched waxed linen or silk thread will typically last between three and five years of daily wear, with higher durability for robust leathers such as Barenia. Alternating between two straps considerably extends the life of each. The quality of the construction becomes most apparent over time: a true bespoke strap does not delaminate, lose its shape or drop a stitch.

Calibre AP 2924 integrates the tourbillon escapement within a movement that also includes a power reserve indicator — it is not a complication added for display alone, but part of a complete system. The carriage is positioned in deliberate dialogue with the symmetry of the «Grande Tapisserie» dial, remaining legible without overwhelming the time display. In a 41mm platinum case, this mechanical and visual density is precisely what places the reference 26516PT.ZZ.1220PT.01 in a category of its own within Audemars Piguet's output.