Few anniversaries in watchmaking carry as much weight as this one. In 2026, Vacheron Constantin, the oldest watch manufacture in continuous operation since 1755, marks 30 years of the Overseas with a limited edition that brings together everything the collection stands for: sport-chic design, an integrated bracelet, and one of the most complex mechanisms in fine watchmaking, all in a case just 8.1mm thick.
The Overseas Perpetual Calendar Ultra-Thin Azure (ref. 4300V/220G-H119) is limited to 200 individually numbered pieces, cased in 18k white gold, and priced at US$132,000. It is the first time Vacheron Constantin has paired a white gold Overseas perpetual calendar with an azure dial.
It is a 41.5mm self-winding perpetual calendar with moonphase, released in September 2026 to celebrate the Overseas collection's 30th anniversary. The lacquered dial introduces a new shade of azure blue, lighter and less saturated than the deep Overseas blue collectors have known since 2016. It shifts subtly in changing light and contrasts with the cool sheen of the white gold case.
The dial carries four calendar indications: the day of the week at 9 o'clock, the date at 3 o'clock, the month and leap-year cycle at 12 o'clock, and a moonphase at 6 o'clock on a matching azure disc. Applied 18k white gold hour markers and hands are accented with blue Super-LumiNova.
The Overseas story begins before the Overseas itself. In 1975, Vacheron Constantin introduced the Chronomètre Royal with an integrated bracelet. In 1977, the Maison marked its 222nd anniversary with the 222, designed by Jörg Hysek. It was a steel sports watch with an integrated bracelet that now stands alongside the Audemars Piguet Royal Oak and Patek Philippe Nautilus as one of the founding luxury sports watches.
In 1996, Vacheron Constantin launched the Overseas as the 222's spiritual successor, with a distinctive bezel inspired by the Maltese cross, the brand's emblem since the 1880s. The second generation arrived in 2004 with a bolder design, Maltese-cross bracelet links, and the first complications. The current third generation, introduced in 2016, refined the lines, added collection-specific calibres, and introduced the tool-free interchangeable strap system.
Thirty years in, the Overseas is one of the few integrated-bracelet sports lines that can claim a genuine lineage. This anniversary edition honors it with the collection's most prestigious complication.
At the heart of the watch is the Manufacture Calibre 1120 QP/1, a self-winding perpetual calendar movement just 4.05mm thick. That thinness is what allows a full perpetual calendar and moonphase to fit into an 8.1mm case, slimmer than many simple three-hand sports watches.
A perpetual calendar is one of the most intellectually demanding complications in watchmaking. The mechanism works like a mechanical computer. It automatically accounts for months of 28, 29, 30, and 31 days, including leap years, and needs no manual correction until 2100, when the Gregorian calendar skips a leap year. Look closely at the month subdial and you will see each month listed four times: the watch tracks a full four-year, 48-month cycle to know exactly when February has 29 days.
The 1120 has a remarkable pedigree. It descends from the legendary ultra-thin automatic calibre first developed in the late 1960s, a base movement that went on to power the original 222, Royal Oak, and Nautilus. In other words, the engine family behind this watch is woven into the history of all three Holy Trinity maisons.
The Calibre 1120 QP/1 carries the Geneva Seal (Poinçon de Genève), the oldest quality hallmark in watchmaking, established in 1886. To earn it, a movement must be assembled, adjusted, and finished in the Canton of Geneva to strict standards covering every component, including those the owner will never see.
Through the sapphire caseback, that craftsmanship is on full display. The bridges are decorated with Côtes de Genève stripes and hand-beveled edges, the mainplate is finished with perlage, and the calendar components receive vertical or circular satin-brushing. Hand-beveling alone is painstaking work: a finisher polishes each edge of each bridge at a precise angle to catch the light, a skill that takes years to master.
Assembling a perpetual calendar adds another layer of difficulty. Every lever, cam, and wheel in the calendar train must interact precisely, because an error of a fraction of a millimeter can stop the date from advancing correctly at the end of the month. That is why only a small number of manufactures produce perpetual calendars in-house, and why they are rarely made in large numbers.
In fine watchmaking, three Swiss houses sit at the top of the hierarchy: Patek Philippe, Audemars Piguet, and Vacheron Constantin, known collectively as the "Holy Trinity." The title reflects centuries of uninterrupted history, in-house mastery of the highest complications, exceptional hand-finishing, and consistent performance at auction.
Vacheron Constantin holds a unique place among the three. Founded in Geneva in 1755, it is the oldest of the Trinity and has never stopped producing watches in more than 270 years. It is renowned for its grand complications, its Métiers d'Art decorative crafts, and its long association with the Geneva Seal.
The perpetual calendar itself is considered one of the "grand complications," alongside the minute repeater and the chronograph. Creating one in an ultra-thin, integrated-bracelet sports case demonstrates exactly the kind of technical and aesthetic mastery that earned Vacheron Constantin its place in the Trinity. It also explains why the Overseas competes directly with the Royal Oak and Nautilus perpetual calendars.
True to the Overseas concept, the watch comes with three interchangeable straps that swap without tools: an integrated 18k white gold bracelet with half-Maltese-cross links and a triple-blade folding clasp with micro-adjustment, a white rubber strap, and a denim-blue rubber strap, both fitted with 18k white gold pin buckles.
The 30th anniversary edition retails for US$132,000 and is limited to 200 pieces.
The case measures 8.1mm thick, and the Calibre 1120 QP/1 movement inside is just 4.05mm thick.
Watch Collecting Guides | New Watch Releases | Watch Events | FAQ | Community