NUIT DES ÉTOILES

NDE91

Limited Edition 300 pieces

SWISS MADE

Ø38 MM

The Mu:n projects are official partners of the French Astronomy Association and the Nuits des Étoiles 2026 event.

With an enlarged moon disc, developed on the basis of a modified SW288 caliber, the Nuit des Étoiles (night of stars) model celebrates the link between astronomy and watchmaking.

Limited edition of 300 pieces
Delivery: Summer 2026

The new limited edition Nuit des Étoiles will be launched in spring 2026. Sign up to be notified of the launch.

Pre-order - May 2026

Specifications : 38mm case in 316L stainless steel, 11.60 mm thick with a resistance of 10 ATM (100 meters).

Movement : Modified Sellita Caliber SW288, manual version of Swiss origin. Elaborate adjustment (+/- 7 sec). Power reserve of 41 hours and frequency of 4 Hz.

THIS EDITION WAS PRODUCED IN PARTNERSHIP WITH THE FRENCH ASTRONOMY ASSOCIATION TO CELEBRATE THE 2026 NIGHT OF THE STARS EVENT

MU:N, OFFICIAL PARTNER OF THE EVENT NIGHTS OF THE STARS

The Night of the Stars, organized since 1991 by the French Astronomy Association (AFA), is a major free national event dedicated to the discovery of the night sky. Every summer, more than 500 events are organized across France by nearly 350 clubs, associations and local authorities, bringing together tens of thousands of enthusiasts around telescopes, workshops and conferences.

Through this new edition, Mu:n is proud to partner with this national initiative and to support the AFA, in order to strengthen the dialogue and poetry that unite the worlds of watchmaking and astronomy.

NUIT DES ÉTOILES

ENLARGING THE SKY ON A MODIFIED SELLITA CALIBER

Built on a Sellita SW288 base, the movement has undergone several modifications: removal of the day disc, replacement of the moon kit and rearrangement of the components to enlarge the area dedicated to the moon. The resulting disc occupies more than 65% of the dial.

A central, slightly opaline plexiglass reveals the lower part of the disc and reinforces the play of depth. This three-level construction allows the moon disc to blend completely into the very structure of the watch.

A BRIDGE BETWEEN TWO UNIVERSES

FROM THE INFINITELY LARGE TO THE INFINITELY SMALL

Astronomy and watchmaking are two worlds on opposite scales but driven by the same obsession: observing and measuring time. It is with the same childlike gaze and the same emotion that we contemplate the immensity of the night sky or the infinite and regular ballet of a movement.

Through the Nuit des Etoiles series, we wish to strengthen the dialogue between these two worlds, celebrating the magic of mechanics and the beauty of the night sky.

A RELIEF MOON IN 8 MILLIMETERS

The Moon, fully luminescent (BGW9), is built on a realistic representation of the star. A femto laser, precise to the micron and at a frequency of 10⁻¹⁵ seconds, is used to dig and burn the material at different intensities. Each crater is revealed and turns brown, with a relief perceptible to the naked eye.

This innovative printing method is a first in the watchmaking sector. It was developed in collaboration with the miniaturization workshop AJS Production , which was awarded at the EPHJ trade fair in 2016 in Geneva.

1991 SKY MAPPING

The disk is an exact map of the sky on the day of the first night of the stars in 1991. The reproduction of this map is accurate to the micron, or 0.001 millimeter.

The so-called first-magnitude stars are dug deeper to reveal the SuperLuminova beneath the paint layer. The constellations light up at night.

A SKY THAT COMES TO LIFE AT NIGHT

The moon disc contains Super-Luminova.

Introduced in 1993, this photoluminescent pigment captures light and releases it in the dark. The Nuit des Etoiles series lights up at nightfall and transmits a soft light in the darkness.

AN ODE TO ASTRONOMIC POETRY

A DOUBLE FINISH DIAL ON THREE LEVELS

The dial is composed of two separate pieces, nested on two levels. The central moon, located on a third plane below the main dial, accentuates the depth of this tiered architecture.

The outer part of the dial features a “cocktail” finish made of cold enamel, providing a smooth, shiny surface with great visual depth. The slightly translucent inner part subtly conceals the lower part of the moon disc.

The straight baton-shaped indexes and hands contrast with the dial's softness. Their alternating polished and brushed finishes capture every ray of light. Like a shooting star, this light glides along the edges, bringing the watch to life with every movement of the wrist.

TECHNICAL DETAILS

BOITIER

316L stainless steel 10 ATM Double-domed sapphire crystal

CADRAN

Two tiers Cold enamel finish Transparent plexiglass disc

CALIBRE

Sellita SW288-1M Hand-wound 29.5-day moon phase

BRACELET

Milk calf leather Made in France 5-link stainless steel bracelet

THE WORKSHOPS BEHIND THIS EDITION

This edition was produced in partnership with Franco-Swiss workshops, combining traditional knowledge and cutting-edge technology.

Founded in 1950 in La Chaux-de-Fonds, Sellita started out as an assembler of mechanical movements. The company went on to design and produce its own range of movements, before establishing itself over the years as a veritable pillar of the Swiss watchmaking industry.

As partners in the Mu:n Projects since October 2020, Sellita manufactures are responsible for the development and production of the SW200 automatic movements.

Manufactures Sellita

CALIBER • SETTINGS

A French-speaking company founded in 1992, PERFEX has forged close links with all the players in the Shenzhen industrial basin over more than 30 years. The beating heart of the modern watchmaking industry, the region is now supplanting European basins in the production of standardized parts, both in terms of tooling and price.

Since March 2020, PERFEX has been supplying materials and industrial components for the Mu:n Projects from its control office in Hong Kong.

Perfex Manufactures

CASE • DIAL • HANDS

Founded in 1983 in the Franche-Comté village of Avoudrey, the SIS group is the standard-bearer of French haute maroquinerie. Backed by 30 years' experience and an in-house training school, the group boasts a combination of traditional craftsmanship and state-of-the-art machinery.

Following a collaboration initiated in January 2022, the SIS Group has been responsible for the entire leather goods range of Mu:n Projects since March 2023.

SIS Leather goods

LEATHERS • STRAPS

Founded in 1970, PH Saner SA has lived and breathed watchmaking. From a small family workshop specializing in the winding of mechanical movements, the company was buoyed by the Quartz boom of the 1980s. With its own production site, the workshop returned to its core business in the early 2000s, heralding the return of mechanical movements.

The workshop has been supporting Mu:n projects since April 2022. It is the guarantor of the Swiss Made label, and controls the entire assembly chain: from movement modifications to after-sales service.

PH Saner SA

ASSEMBLY • A.S.S

Founded in 1998, AJS Production specializes in the modification of movements and the production of miniature parts for major watch manufacturers. Backed by a design office that is constantly innovating, the company distinguished itself at the Exhibitors Grand Prix 2016 in Geneva for its expertise in miniaturization.

Since January 2021, AJS Production has been supporting Mu:n Projects from the preparation of technical drawings to the development and production of miniature parts (oscillating weight, moon disk, etc.).

AJS Production

R&D • OSCILLATING WEIGHT • MOON DISK

Click on the icons to discover our workshops

Founded in 1998, AJS Production specializes in the modification of movements and the production of miniature parts for major watch manufacturers. Backed by a design office that is constantly innovating, the company distinguished itself at the Exhibitors Grand Prix 2016 in Geneva for its expertise in miniaturization.

Since January 2021, AJS Production has been supporting Mu:n Projects from the preparation of technical drawings to the development and production of miniature parts (oscillating weight, moon disk, etc.).

AJS Production

R&D • OSCILLATING WEIGHT • MOON DISK

CALIBER SW288-1M SELLITA

SWISS WATCHMAKING EXCELLENCE

The model is equipped with the SW288-1a caliber, from the Sellita manufactures. As a standard of Swiss watchmaking excellence, it features a rapid day/night correction, a day calendar and a moon phase complication.

The caliber is offered in an elaborate setting, at +/-7 seconds per day, controlled in Switzerland at the PH Saner workshop.