Strap for Overseas Perpetual Calendar Boutique

The strap attachment on this Overseas does not follow a standard straight-lug geometry: the lugs are an integral part of the case design, conceived by Vacheron Constantin as a single unified element. A bespoke strap is nonetheless fully achievable: it is built directly on the watch by <a href="/pages/casati-booking">Casati Milano</a>, following a manual measurement of the actual lug geometry.

The process begins with an appointment at the atelier, where the watch is examined in person: the curvature of the lugs, their thickness and attachment angle are measured — data that exist nowhere in any catalogue. From these measurements, the strap is built with a custom-shaped end piece, ensuring a play-free fit and a seamless visual continuity with the case.

Louisiana alligator with a cross-cut grain expresses the same tension between rigorous geometry and noble material that defines the hexagonal bezel of the Overseas. Alternatively, natural untreated Barenia calfskin develops a living patina over time that reflects the watch's history without ageing it, ideal for those who wear this timepiece as a high-level daily instrument.

A strap built with selected leathers, hand stitching and internal reinforcements suited to the case thickness will last years, not seasons. Longevity depends on the leather chosen, daily care and frequency of use: a well-maintained alligator strap develops a patina that enhances its aesthetic value, while natural Barenia improves noticeably with regular wear.

Calibre 1136 QP is a manufacture movement combining two of the most demanding mechanical architectures: a perpetual calendar — displaying day, date, month and leap year — and a column-wheel chronograph, which ensures precise wheel engagement without slippage. Integrating both complications into a 42mm sports case in titanium and steel, while preserving legibility and proportion, reflects the full technical depth of the Genevan Maison.