A Watch That Redefines Time
In the rarefied world of haute horlogerie, certain complications are revered as the ultimate demonstration of mastery. The perpetual calendar sits among these at the very summit — a mechanical marvel capable of tracking the irregularities of our calendar without human intervention. At the crossroads of heritage and modern versatility, the Vacheron Constantin Overseas Perpetual Calendar Ultra-Thin has emerged as one of the most compelling expressions of this art.

It is not just another perpetual calendar watch. It is a testament to what happens when precision, elegance, and versatility collide in one of the most technically advanced and visually captivating timepieces of our era. With new dial colours, ultra-thin engineering, and a level of finishing only a true luxury ultra-thin watch can deliver, the Overseas Perpetual Calendar Ultra-Thin positions itself as both a companion for explorers and a collectible for connoisseurs.

The Poetry of the Perpetual Calendar
To understand the appeal of the Vacheron Constantin Overseas Perpetual Calendar Ultra-Thin, one must first grasp the challenge of the perpetual calendar. The human calendar is a flawed construct: months of varying lengths, an additional day every four years, and centenary anomalies that defy the natural flow of astronomical time.
A perpetual calendar watch is essentially a miniature mechanical computer. It is programmed to recognize the quirks of civil time, automatically adjusting for leap years, 30- and 31-day months, and the peculiarities of February. In the case of Vacheron Constantin’s creation, this adjustment remains accurate without intervention until 2100. Only then will the mechanism require a single correction — a testament to its enduring intelligence.
For the collector, this means wearing not just a watch but an enduring piece of mechanical poetry. Each glance at the dial reflects centuries of horological progress condensed into a living object.

Inside the Movement: Calibre 1120 QP/1
At the beating heart of the Vacheron Constantin Overseas Perpetual Calendar Ultra-Thin lies one of the most remarkable calibres ever crafted: the calibre 1120 QP/1.
This self-winding mechanical movement embodies both strength and refinement
- Thickness: At just 4.05 mm, it achieves ultra-thin proportions without compromise.
- Components: 276 parts, meticulously finished, including 36 jewels.
- Frequency: 19,800 vibrations per hour.Power Reserve: A practical 40 hours, ensuring daily reliability
The perpetual calendar function displays day, date, month, leap year cycle, and an exquisitely rendered moon phase — details that balance technical necessity with artistic refinement.
Turn the watch over, and a sapphire crystal caseback reveals what words can barely capture. A 22K gold oscillating weight, decorated with a compass rose, recalls the spirit of travel that defines the Overseas line. The bridges, bevels, and plates shimmer with Côtes de Genève, circular graining, chamfering, and straight graining, all hallmarks of haute horlogerie. Even the parts hidden from view are finished to the highest standard — proof of Vacheron Constantin’s uncompromising philosophy.
This is not merely a luxury ultra-thin watch. It is horological architecture on a microscopic scale, the very definition of craftsmanship elevated into art.

Aesthetic Brilliance: Dial Colours & Case Options
Design is where this perpetual calendar transitions from technical mastery to emotional desire. The new editions of the Overseas Perpetual Calendar Ultra-Thin feature dial colours that magnify its classic and adventurous personality.

- Pink Gold Watch Variant: Warm, refined, and deeply luxurious. Paired with a white or blue strap, it can glide seamlessly from formal occasions to summer yachts.
- White Gold Watch Variant: Sleek, discreet, and contemporary. Complemented by white or burgundy straps, it appeals to those who prefer understated elegance.

The moonphase window provides an additional layer of artistry — a poetic link between the wearer and the celestial cycles that have guided humanity for millennia. Every detail of the dial, from applied markers to the refined typography, has been conceived to balance clarity, sophistication, and versatility.
The sapphire caseback makes the experience even more intimate. This is not a closed mystery but an open gallery where the collector can admire the living heartbeat of a calibre designed to endure centuries.

One Watch, Three Styles: Sporty Elegance and Versatility
Vacheron Constantin understands the demands of modern collectors. A perpetual calendar should not remain confined to a safe — it should adapt to the realities of travel, business, and leisure. That is why the Overseas Perpetual Calendar Ultra-Thin was engineered with interchangeable straps that require no tools.

A pink gold watch on its matching bracelet can transform into a relaxed blue rubber strap companion in minutes. A white gold watch can alternate between a sharp burgundy strap for evening wear and a white rubber option for casual weekends.

This versatility ensures the timepiece is a faithful traveling companion, not just a perpetual calendar watch for formal settings. It can be sporty, refined, or cosmopolitan — an accessory that evolves with its owner’s lifestyle.
The Overseas Spirit: Luxury for Explorers
The compass rose engraved on the 22K oscillating weight is more than decoration. It symbolizes the DNA of the Overseas collection — luxury watches created for those who view the world as a map of endless journeys.
From the bustling streets of cosmopolitan capitals to the decks of superyachts, the Vacheron Constantin Overseas Perpetual Calendar Ultra-Thin embodies this duality. It is both an anchor of tradition and a compass pointing toward discovery.
Few haute horlogerie timepieces achieve this balance. Too often, complexity anchors a watch to safes and showcases. This model instead celebrates freedom — freedom to travel, adapt, and embody multiple identities without compromise

Collectors’ Perspective: Why It Matters
For serious collectors, the appeal of the Vacheron Constantin Overseas Perpetual Calendar Ultra-Thin lies in several key factors:
- Ultra-Thin Prestige: The perpetual calendar complication, in such slim proportions, remains one of horology’s most significant challenges. Owning one signals both taste and appreciation for mechanical mastery.
- Rarity: With limited production and artisanal finishing, this is not a piece to be found on every wrist. Its scarcity enhances desirability.
- Versatility: From interchangeable straps to its ability to shift between sport and elegance, it is as functional as collectible.
- Brand Heritage: Vacheron Constantin, founded in 1755, remains among the oldest and most respected Maisons. Its presence in the “Holy Trinity of Watchmaking” cements its status
For those comparing against competitors, such as the Patek Philippe 5740 or the Audemars Piguet Royal Oak Perpetual Calendar, the Overseas Perpetual Calendar Ultra-Thin offers a unique blend of modern versatility and classical refinement — a proposition few rivals can match.
Investment Value & Timeless Appeal
The value of a watch cannot be measured purely in currency, yet the Vacheron Constantin Overseas Perpetual Calendar Ultra-Thin holds undeniable financial significance.
- Historically, Vacheron Constantin perpetual calendars have been steadily appreciated due to their scarcity and craftsmanship.
- The calibre 1120 QP/1 is a manufacture movement recognized across the industry, adding technical credibility that reinforces long-term demand.
- Ultra-thin perpetuals represent a niche category, ensuring collectors view them as art pieces and investment-grade assets.
Beyond numbers, however, lies the emotional appeal. This is not just about collecting a watch — it is about collecting time itself, distilled into a mechanical object that transcends trends and eras

A Legacy Encapsulated in Metal
The Vacheron Constantin Overseas Perpetual Calendar Ultra-Thin is more than a perpetual calendar watch. It is a masterclass in engineering, design, and luxury versatility. It balances the technical challenge of the calibre 1120 QP/1, haute horlogerie finishing artistry, and interchangeable straps’ practicality into one seamless narrative.
It is a watch that adapts — a pink gold watch for collectors of warmth and prestige, and a white one for those seeking discretion and modernity. It is both sporty and elegant, technical and poetic, and above all, timeless.
In an era where luxury often risks becoming ephemeral, Vacheron Constantin reminds us that true greatness is perpetual
Frequently Asked Questions
What is a perpetual calendar watch?
Why doesn’t it need adjustment until the year 2100?
How does a moon-phase display work?
What does 19,800 vibrations per hour mean?
What makes an ultra-thin movement special?
Are interchangeable straps really tool-free?
Is a high-complication timepiece suitable for daily wear?
How often should a fine mechanical watch be serviced?
What’s the difference between pink gold and white gold?
How do I change straps without scratching the case?
Note: Specific specifications and maintenance intervals can vary by model; consult official documentation for exact details.