Ulysse Nardin built its name in the 19th century on marine chronometers accurate enough to navigate by the stars, and reinvented itself in the 1980s around the astronomical work of Dr. Ludwig Oechslin. The Blast Moonstruck in rose gold, a 20-piece limited edition announced on 23 July, draws on both. It takes the Moonstruck, the geocentric astronomical display Oechslin first designed in 2009, and sets it inside the angular 45mm Blast case.
Five readings from one system
The Moonstruck was Oechslin's own coda to his Trilogy of Time, the Astrolabium, Planetarium and Tellurium that made Ulysse Nardin the pioneer of the astronomical wristwatch in the late 1980s. Where those mapped the heavens in dense concentric scales, the Moonstruck reduced the idea to the Earth, Sun and Moon in one intuitive display, following Oechslin's rule of keeping the complexity in the movement rather than the reading.
There is still a lot to read. Five astronomical functions are woven into a single geared system rather than added as separate complications: a worldtimer for all 24 time zones, the apparent positions of the Sun and Moon circling the globe, a moon phase accurate to within a day over 40.3 years, the days of the lunar month, and the tidal coefficients that predict spring and neap tides, a nod to the brand's maritime past. Because every indication is derived 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 case as a stage
At the centre, a three-dimensional Northern Hemisphere is engraved on the underside of a domed sapphire box and suspended above the dial, floating over an aventurine base whose flecks read as 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 mix of precious metal and technical material that has defined the Blast line since it launched.
The movement
Underneath is the automatic UN-106, a 338-component calibre with a 50-hour reserve. It runs a silicon escapement and silicon hairspring, the technology Ulysse Nardin brought to modern watchmaking with the Freak in 2001. A patented mechanism lets the wearer push local time forward or back in one-hour steps using case-side pushers, without disturbing the minute hand or any of the astronomical indications.
Reading the release
The timing is deliberate. Ulysse Nardin is marking its 180th anniversary in 2026 alongside 25 years of the silicon escapement it introduced, and the Moonstruck is a clean statement of what the independent still does well: serious astronomical horology made legible on the wrist. At CHF 94,300 and 20 pieces, it is priced and sized as a collector's object rather than a series watch. Whether the rose gold and black pairing improves on the earlier versions is a matter of taste, but the mechanism underneath it is the same argument Oechslin has been making for four decades.
