Vacheron Constantin’s Berkley Grand Complication: Why It’s Called the Most Complicated Watch

Vacheron Constantin’s 2024 Berkley Grand Complication is a unique, double-sided pocket watch that the maker and Watches and Wonders Geneva presented as the world’s most complicated watch. Watches and Wonders counted 63 complications in its Calibre 3752, but that figure is the event’s and maker’s claim—not a result from a universal, independently standardized ranking system. Its standout innovation is a mechanical traditional Chinese perpetual calendar programmed through 2200.

Why is the Berkley Grand Complication called the most complicated watch?

At Watches and Wonders Geneva in 2024, Vacheron Constantin’s watch was credited with 63 horological complications and 2,877 components. The event said that the count surpassed the Maison’s earlier Reference 57260. Those numbers explain the “most complicated” label in the context of the maker’s and event’s accounting; they should not be read as the outcome of a single industry-wide standard for counting complications. Watches and Wonders Geneva’s 2024 Vacheron Constantin page gives the count and comparison.

#	Preview	Product	Price
1		Pre-Loved Vacheron Constantin 1972 Cambree 25015/000G-9233 Women's Watch in 18k White Gold	$7,250.00	Buy on Amazon
2		For Vacheron Constantin Inheriting Fiftysix Collection Watch Strap For VC	$115.99	Buy on Amazon

The work took 11 years to develop, according to Vacheron Constantin and Watches and Wonders, with one year devoted entirely to assembly. The unusual calendar is the project’s defining technical distinction, rather than simply a large tally of familiar functions.

What makes its traditional Chinese perpetual calendar different?

The traditional Chinese calendar is lunisolar: its months begin at new moons, while its years can include an additional, embolismic month to keep the lunar calendar aligned with the solar year. That irregular pattern differs from the fixed month sequence of the Gregorian calendar, so keeping it mechanically requires more than repeating a standard annual date cycle.

#1 Best Overall

Pre-Loved Vacheron Constantin 1972 Cambree 25015/000G-9233 Women's Watch in 18k White Gold

• Metal Type: White Gold
• Imported
• Excellent condition - Minimal signs of wear consistent with pre-owned use. This item is pre-owned and may show light signs of wear. Please refer to the condition and photos. All of our products are authenticated and certified by our team of luxury experts.
• Wrist Size: 6.50"
• Case Size: 21mm

$7,250.00

Buy on Amazon

Vacheron Constantin says Calibre 3752 is mechanically programmed to handle the traditional Chinese calendar through 2200. The watch displays the Chinese New Year date, while its reverse carries a Gregorian perpetual calendar. The maker also describes astronomical indications that include a sky chart referenced to Shanghai. These are the manufacturer’s descriptions of the watch’s programming and displays, not independently verified calendar tests. Vacheron Constantin’s product page describes the calendar and astronomical indications.

What other mechanisms are inside?

Calibre 3752 combines calendar work with striking, timekeeping and timing functions. The following functions are specified by Vacheron Constantin:

The maker’s descriptions of these functions appear on its official Berkley Grand Complication page.

What are the watch’s confirmed specifications?

Vacheron Constantin’s 2025–26 catalogue identifies the Berkley as a single-piece edition. Its listed case and movement details are:

Rank #2

For Vacheron Constantin Inheriting Fiftysix Collection Watch Strap For VC

• Selected calf leather, leather shoes feel soft and comfortable, and the body of the watch as one!
• The bottom leather is comfortable, soft, breathable, waterproof and sweatproof, which can effectively resist the erosion of sweat and prevent odour.
• The clasp is made of 316 stainless steel, polished meticulously and stable without fading.
• Please measure the lug width before ordering, the lug width must be exactly the same as the selected strap width to ensure accurate wearing.
• A set of matching spring bars and installation tools are included.

$115.99

Buy on Amazon

There is a published diameter discrepancy: Hodinkee’s 2024 report gives 90.8 mm, rather than the 98 mm in the maker’s catalogue. The catalogue value is the maker’s specification; the available sources do not explain the difference. Hodinkee also reports a weight of 960 grams, a figure not substantiated in the official catalogue details cited here. Hodinkee’s April 9, 2024 report gives those figures.

The cited sources establish no public price or current retail availability. The catalogue’s single-piece designation identifies it as a unique edition, not a regular production model.

How does it compare with Vacheron Constantin’s earlier record watch?

Watches and Wonders says the Berkley surpassed Vacheron Constantin’s Reference 57260 on complication count. The useful distinction is that the Berkley’s headline count is 63 by that event’s accounting, while its traditional Chinese perpetual calendar is the specific new calendar achievement highlighted in the 2024 announcement. The source does not provide a comparable complication breakdown here, so a more detailed function-by-function comparison would go beyond what it establishes.

Quick Recap

Bestseller No. 1

Pre-Loved Vacheron Constantin 1972 Cambree 25015/000G-9233 Women's Watch in 18k White Gold

Metal Type: White Gold; Imported; Wrist Size: 6.50"; Case Size: 21mm

$7,250.00

Bestseller No. 2

For Vacheron Constantin Inheriting Fiftysix Collection Watch Strap For VC

The clasp is made of 316 stainless steel, polished meticulously and stable without fading.

$115.99

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.