Vacheron Constantin “Solaria”: Unpacking the World's Most Complicated Wristwatch

AndCavanaugh · 2025-03-31T23:10:41Z

Explore the Vacheron Constantin “Solaria,” hailed as the world's most complicated wristwatch. Discover its 1521 parts, 204 jewels, and extensive complications.

AndCavanaugh

WPS member · Vacheron Constantin forum

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AndCavanaugh introduces the Vacheron Constantin “Solaria,” a horological marvel positioned as the world’s most complicated wristwatch. His initial post provides key specifications and a detailed list of its numerous complications, inviting the WatchProSite community to explore the intricate engineering and design behind this exceptional timepiece. This article delves into the Solaria's features and the community's initial reactions to its complexity and aesthetic.

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Only 45mm in diameter and 14.99mm thick. 1521 parts, 204 jewels, 3Hz, 72-hour going

Per VC the complications are:

Time measurement

Day and night indication for reference city
Second time zone hours and minutes (on 24-hour display)
World time indication for 24 cities
Second time zone day and night indication
3Hz tourbillon with silicon balance wheel (with high Q factor)
Civil time display module coupled to the base movement

Gregorian Perpetual Calendar

Perpetual calendar
Days of the week
Date
Months
Year indication
Leap-year indication
Indication for the number of the week within the year (ISO 8601 calendar)
Number of the day of the week (ISO 8601 calendar)

Lunar indications

Astronomical Moon phases and age of the Moon
Tide level indicator
Spring and neap tides indication

Astronomical indications

Indication of seasons, equinoxes & solstices
Position of the Sun
Sunrise time (according to the city of reference)
Sunset time (according to the city of reference)
Duration of the day (according to the city of reference)
Equation of time on tropical (solar) gear
Culmination time of the Sun (according to the city of reference)
Height of the Sun above the horizon (according to the city of reference)
Declination of the Sun, three-dimensional Earth showing the latitude of the Sun in the Northern/Southern hemisphere
Sidereal hours
Sidereal minutes
Astronomical zodiac signs
Sky chart (according to the city of reference)
Temporal tracking of celestial objects

Chiming complications

Minute repeater
Westminster carillon chime (4 hammers & 4 gongs)
Choice of hour-only or full chime
Crown locking system during the chiming
Double-stop hammer system to limit rebound and optimise transmission of the hammers’ kinetic energy

Split-seconds Chronograph

Chronograph (1 column wheel)
60-minute counter
Split-seconds chronograph (1 column wheel)
Isolator system for the split-seconds chronograph

Additional feature

Power-reserve indication (outer disc at 190°)

Key Points from the Discussion

The Vacheron Constantin “Solaria” achieves a remarkable balance, presenting an extremely complex array of complications within a design that still appears understated.
A notable feature of the Solaria's minute repeater is its system for selecting the striking mode on demand, allowing the user to choose between hours only or the full striking mechanism with hours, quarters, and minutes.
There is a question regarding the inclusion of a lifetime service guarantee for the Vacheron Constantin “Solaria” for both the original buyer and their heirs, a feature sometimes associated with ultra-complicated timepieces.
Conflicting information exists regarding the lifetime guarantee for the Solaria; while one source (Hodinkee) mentioned it, the official complication list and another reputable horological publication (SJX) do not corroborate this claim.

The Discussion

cazalea

Mar 31, 2025

Hopefully included for the buyer’s lifetime, and (sorry PP) those of his heirs? Cazalea

Marc Obermann

Mar 31, 2025

I think it looks stunning but would struggle to use even half of the features this watch offers far less even to understand them. But I can appreciate just how complex this watch is whilst still looking somewhat understated for what it does. Marc

AndCavanaugh

Apr 1, 2025

The Hodinkee article says it does, but it's probably wrong, not mentioned in the comp list or the SJX article

AndCavanaugh

Apr 1, 2025

"system for selecting the striking mode on demand of the repeater, choosing between hours only or engaging the entire striking mechanism with hours, quarters and minutes"

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Vacheron Constantin “Solaria”: Unpacking the World's Most Complicated Wristwatch

Key Points from the Discussion

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