September 23, 2025
The latest release from Ulysse Nardin, the Blast [Free Wheel Marquetry Silicon Green], is a masterclass in horological engineering and material science. Designated as reference 1760-401LE-8A-GREEN/3A, this 10-piece limited edition moves beyond aesthetics to offer a technical showcase centered on the brand’s pioneering use of silicon, integrated into both its complex movement architecture and its distinctive dial construction. It represents a convergence of advanced mechanics and innovative fabrication techniques.
Case Architecture and Specifications
The timepiece is housed in a substantial 45mm 18k white gold case with a thickness of 12.4mm. Its avant-garde silhouette is defined by angular, partially open-worked three-piece lugs that are characteristic of the Blast collection. A prominent bowl-shaped sapphire crystal forms both the front and sides, providing a panoramic view of the dial-side components. While visually robust, the case is rated for 30 meters of water resistance, a specification appropriate for a high-complication watch not intended for aquatic use. It is paired with a gray textured rubber strap and a matching white gold deployant clasp.
Engineering the Caliber UN-176
At its core is the manual-wind Caliber UN-176, a 239-component movement. It operates at a frequency of 2.5 Hz (18,000 vph), a deliberate choice that helps enable its impressive 170-hour (seven-day) power reserve, which is supplied by a flying double mainspring barrel. The movement’s key features include a flying tourbillon and the Ulysse Nardin Anchor constant force escapement, both designed to enhance chronometric stability. The power reserve is displayed via a discreet indicator disc at the 4 o’clock position.
Advanced Materials and Fabrication
The watch’s most significant technical achievement is its comprehensive use of silicon. The dial is a mosaic comprised of 103 individual slivers of green silicon, meticulously hand-assembled with both matte and polished finishes to create depth. This material extends to critical movement components, including the balance spring, escapement wheel, and anchor, leveraging silicon’s antimagnetic and thermo-compensating properties. The placement of these key mechanical elements above the dial surface offers a striking, three-dimensional display without resorting to full skeletonization.
The Blast Free Wheel Marquetry Silicon Green is a definitive statement of technical prowess. It successfully integrates a complex, high-performance caliber with an intricate application of advanced materials, demonstrating a sophisticated approach to modern haute horlogerie.
#UlysseNardin #BlastFreeWheel #SiliconMarquetry #HauteHorlogerie #Watchmaking #CaliberUN176 #Tourbillon #LimitedEditionWatch