Mu:n Watch: Starry Night 38 mm Nde91

First batch: September delivery (out of stock)

Second batch: December delivery

Mu:n: Nuit des Étoiles, a watchmaking creation dedicated to astronomy

The Mu:n Nuit des Étoiles NDE91 is undoubtedly one of the most ambitious creations ever produced by Mu:n, a young French brand. Developed in official partnership with the French Astronomy Association (AFA) for the Nuits des Étoiles 2026, this limited edition of 300 pieces celebrates the historical link between astronomy and watchmaking. The Nuit des Étoiles transforms the night sky into a true mechanical work of art worn on the wrist.

The Mu:n Nuit des Étoiles stands out with its three-level dial architecture. At its center, an impressive relief lunar disc takes pride of place. Produced using high-precision femto-laser technology (down to the micron), the moon features a perceptible relief to the naked eye and benefits from a SuperLuminova BGW9 treatment. True to Mu:n's DNA, this Nuit des Étoiles blends technical innovation, emotion, and astronomical poetry.

The Nuit des Étoiles dial reproduces with micrometric precision the exact cartography of the sky observed during the first edition of the Nuits des Étoiles in 1991. The brightest stars are engraved deeper to reveal the Super-LumiNova placed beneath the dial and naturally bring out the constellations in the dark. The Mu:n Nuit des Étoiles thus becomes a true map on the wrist.

Powered by a Swiss Sellita SW288 manual movement specially modified for this edition, the Mu:n Nuit des Étoiles features a reworked architecture to significantly enlarge the lunar display. The orbital seconds hand was conceived as a satellite orbiting the central moon, further reinforcing the unique identity of this Nuit des Étoiles, and incidentally, its legibility.

The 38 mm case of the Mu:n Nuit des Étoiles offers particularly balanced proportions and excellent comfort on the wrist, with a thickness of just 11.6 mm. Combined with its double-domed sapphire crystal and 100-meter water resistance, the Nuit des Étoiles perfectly blends watchmaking sophistication with everyday use.

 

Technical Specifications

• Brand: Mu:n
• Model: Nuit des Étoiles
• Reference: NDE91
• Movement: Swiss manual winding mechanical
• Caliber: Modified Sellita SW288
• Functions: Hours, minutes, orbital seconds, moon phase
• Frequency: 28,800 vibrations/hour (4 Hz)
• Jewels: 18
• Power Reserve: 41 hours
• Accuracy: +/- 7 seconds per day
• Case: 316L stainless steel
• Diameter: 38 mm
• Lug to lug: 46 mm
• Thickness: 11.6 mm
• Crystal: Double-domed sapphire
• Dial: Three-level construction with cold enamel finish
• Lunar disc: Femtosecond laser-engraved relief, SuperLuminova BGW9
• Special feature: Exact mapping of the sky from Nuits des Étoiles 1991
Water Resistance: 100 meters (10 ATM)
• Strap: Blue French calfskin leather
• Additional strap: 5-link steel
• Limited Edition: 300 numbered pieces
• Mu:n Warranty: 2 years

 

Why choose this watch?

The Mu:n Nuit des Étoiles NDE91 is ideal for enthusiasts of astronomy, watchmaking mechanics, and independent French micro-brands. Its relief lunar disc, luminous celestial cartography, and orbital seconds hand make it a truly unique moon phase watch on the market.

The Mu:n Nuit des Étoiles combines innovation, emotion, and Swiss savoir-faire in a particularly exclusive limited edition. A Mu:n watch designed for those who wish to wear a true piece of the sky on their wrist.

 

About the Mu:n brand

Founded in France, Mu:n develops watches inspired by astronomy and space exploration. The brand has quickly distinguished itself through its original creations featuring the moon phase as the central design element. Each Mu:n project combines technical innovation, storytelling, and a passion for sky observation.

With the Nuit des Étoiles, Mu:n pushes this philosophy even further by creating a watch that celebrates the dialogue between the infinitely large of astronomy and the infinitely small of watchmaking.