GPHG Index
2026 edition · La Vallée

Cosmo

La Vallée Cosmo
Category
Mechanical Clock
Case
Steel Hand-blow Murano glass, aluminium,invar.
Movement
Mechanical Power reserve: 9744 h, 3240 vph
Functions
Hours, Minutes, Date, Day, Month, Power reserve indicator, Special escapement Astronomical indications
Size
ø 400 mm
Thickness
235 mm
Reference
-
Price
510,000 CHF

Description

A NEW HOROLOGICAL CONCEPT

COSMO introduces a new horological concept: an entire mechanism, magnetically suspended and rotating continuously on its own axis.

ONE REVOLUTION, MULTIPLE DISPLAYS

COSMO's 14.5-kilogram mechanism completes one revolution on its own axis every sidereal day.

The relative motion of its components rotating at different speeds generates a complete array of time, calendar and astronomical indications.

COSMO simultaneously displays for a specific location on Earth:

Standard Time – Solar Time – Day – Date – Month – Zodiac – Sunrise – Sunset – Dawn – Dusk – Twilight – Apparent Position of the Sun and Stars – Daylight Saving Time.

TWO ECCENTRIC GEARS – ONE PATENT - 406 DAYS

The patented transmission system based on only two eccentric gears forms the foundation of COSMO's entire mechanical architecture.

Directly powered by the mainspring, it drives:

the mono-component flexure-based remontoire;

the large low-frequency escapement regulated by a 70 mm magnetically suspended balance wheel;

the continuous rotation of the entire mechanism.

The patented system delivers 406 days of power reserve from a single winding despite these exceptional energy demands.

The system is also designed to directly integrate the stopwork mechanism and the power reserve indicators.

THE DOME: USER INTERFACE AND ACOUSTIC RESONATOR

Far more than an exquisite handcrafted enclosure, the hand-blown Murano glass dome serves as a user interface to wind and to set COSMO.

It also reveals the astronomical indications and the luminous stars visible above a specific location at a precise moment.

At the owner's request, the dome acts as an acoustic resonator, amplifying the beating of the energy-optimised escapement and making it audible.

BEATING AT YOUR HEART RATE

COSMO’s flying escapement can be configured to beat at the owner's resting heart rate.

COSMO

A search for impossible simplicity.

Supplied by the brand to the GPHG for its entry.