Ulysse Nardin’s Blast Moonstruck Puts the Cosmos on the Wrist in Rose Gold

Ulysse Nardin has always looked to the sky. The Le Locle Manufacture built its name on marine chronometers that guided ships by the stars, and in the 1980s it reinvented itself around the astronomical genius of Dr. Ludwig Oechslin. Its latest release draws on both: the Ulysse Nardin Blast Moonstruck in rose gold, a 20-piece limited edition that compresses an entire celestial model into a 45mm case.

The Moonstruck first appeared in 2009, more than a decade after Oechslin completed his legendary Trilogy of Time, the Astrolabium, Planetarium, and Tellurium that made Ulysse Nardin the pioneer of the astronomical wristwatch. Where those watches mapped the heavens in dazzling complexity, the Moonstruck distilled the idea to its essence: the Earth, Sun, and Moon in one intuitive, geocentric display. It embodies Oechslin’s guiding rule: keep the complexity in the movement, not in the reading.

That reading is remarkable. Five astronomical functions are woven into a single system rather than scattered as separate complications: a worldtimer tracking all 24 time zones, the apparent positions of the Sun and Moon circling the globe, a moonphase accurate to within a day over 40.3 years, the days of the lunar month, and, in a nod to the brand’s maritime roots, the tidal coefficients that predict spring and neap tides. Because everything derives from the true geometry of the Earth-Moon-Sun system, the illuminated face of the Moon always points toward the Sun, exactly as it does in the sky.

The Blast case gives all of this a suitably dramatic stage. At its center, a three-dimensional Northern Hemisphere is engraved on the underside of a domed sapphire box and suspended above the dial, appearing to float over an aventurine base whose natural shimmer reads like a field of stars. The 45mm case pairs an 18-karat rose gold upper section with a black DLC-treated titanium middle and bezel, the contrast of precious metal and technical material that has become the Blast collection’s signature.

Underneath is the automatic UN-106, a 338-component caliber with a 50-hour reserve, running a silicon escapement and silicon hairspring, technology Ulysse Nardin introduced to modern watchmaking with the Freak in 2001 and still produces in-house. A patented mechanism lets the wearer jump local time forward or back in one-hour steps using case-side pushers, without disturbing any of the astronomical indications or the minute hand.

The timing is fitting. Ulysse Nardin is marking its 180th anniversary in 2026, along with 25 years of the silicon revolution it started, and the Ulysse Nardin Blast Moonstruck is a concise argument for why the independent still matters: serious astronomical horology, made legible and worn on the wrist. Priced at 94,300 CHF and limited to 20 pieces, it is less a watch than a working model of the heavens.