A convergence of Italian design ingenuity and American horological curation has produced the final installment of a celebrated thematic trilogy. UNIMATIC and Massena LAB have revealed their latest collaborative effort, the Modello Quattro ref. U4S-T-SPW, a timepiece launched exclusively for the Geneva Watch Days 2025 event. This new watch not only concludes the NASA Space Exploration series but also ventures into new territory for UNIMATIC by incorporating a dial crafted from a literal piece of the cosmos—a genuine meteorite. It stands as a testament to both brands' commitment to pushing creative boundaries while honoring a narrative of human ambition and discovery.
Founded in Milan in 2015 by industrial designers Giovanni Moro and Simone Nunziato, UNIMATIC has carved a distinct niche for itself in the watch world. The brand’s ethos is rooted in a minimalist yet highly functional design language, drawing inspiration from classic tool watches of the past but reinterpreting them through a contemporary, streamlined lens. Moro and Nunziato, both graduates of the prestigious Politecnico di Milano, apply their industrial design principles to every aspect of their timepieces. The result is a collection of watches that are unapologetically utilitarian, yet possess a clean, almost architectural purity that has garnered a dedicated global following. Their approach is about stripping away the superfluous to focus on core functionality, quality materials, and a powerful visual identity.
Courtesy of UNIMATIC
On the other side of this collaboration is Massena LAB, a creative studio founded by William Massena. Far from being a traditional watch brand, Massena LAB operates as a horological think tank and design partner, collaborating with esteemed watchmakers to produce unique and often exclusive timepieces. The "LAB" in its name signifies both "laboratory," for its experimental approach, and "collaboration," for its partnerships. The studio’s mission is to be a nexus of watch culture, blending historical design cues with modern execution. Massena LAB creates watches for informed enthusiasts, fostering a community that appreciates the art and craft of independent watchmaking. Their recent GPHG award for the Chronograph Monopoussoir Sylvain Pinaud x Massena LAB underscores their respected position and influence within the industry.
The U4S-T-SPW serves as the grand finale to the NASA Space Exploration trilogy, a series that has followed the renewed vigor of space exploration spearheaded by NASA’s Artemis missions. The preceding models, the U1-SPG “NASA Artemis” and the UT4-SPT “NASA Artemis II,” laid the groundwork for this celestial theme. These missions represent a monumental effort, aiming to return humans to the lunar surface for the first time since the Apollo program concluded over fifty years ago. More than just a return to the Moon, the Artemis program is a stepping stone for an even more audacious goal: the first crewed mission to Mars. This context of forward-looking exploration and cosmic ambition is deeply embedded in the design and material choice of the U4S-T-SPW.
The watch's physical presence begins with its 40mm case, crafted from lightweight titanium. This choice of material is thematically appropriate, given titanium's extensive use in the aerospace industry for its high strength-to-weight ratio and corrosion resistance. The case is further distinguished by a special Cerakote H140 bright-white coating. This ceramic-polymer finish gives the watch a stark, almost clinical appearance, reminiscent of the pristine equipment used in space missions. The matte white surface is both visually striking and highly durable, providing an extra layer of scratch resistance to the titanium beneath. The case architecture, with a lug-to-lug dimension of 49mm and a thickness of 13mm including the crystal, is designed for robust wearability.
Courtesy of UNIMATIC
The centerpiece of the Modello Quattro U4S-T-SPW is undoubtedly its dial. Each dial is meticulously cut from a fragment of an ancient iron-nickel meteorite that journeyed across the solar system before its discovery on Earth. This material is not merely a design choice; it is a tangible piece of cosmic history. Forged in the vacuum of space, the meteorite’s metallic structure carries the story of its formation over millions, if not billions, of years. For the owner, this means the watch on their wrist has a component that is fundamentally otherworldly, a silent witness to the vastness of time and space.
Visually, the meteorite dial is defined by its Widmanstätten pattern. This unique crystalline structure is characterized by an intricate network of interlacing bands of nickel-iron alloys. This pattern can only form under conditions of extremely slow cooling, on the order of just a few degrees per million years—a process that is impossible to replicate on Earth and occurs only within the cores of asteroids and other celestial bodies. The result is a complex, almost organic texture that ensures no two dials are ever identical. Each watch face presents its own unique map of crystalline lines, a cosmic fingerprint that makes every one of the 60 pieces in this edition a true one-of-a-kind.
Adding to the dial's unique character is an innovative approach to the markers and branding. Instead of being applied to the meteorite surface itself, the hour markers and the iconic NASA "worm" logo are printed directly onto the inner surface of the 2.8mm thick flat sapphire crystal. This clever design choice creates a distinct floating effect, where the indices appear to hover above the textured meteorite dial. This adds a sense of depth and visual intrigue, enhancing the space-inspired theme. The markers themselves are rendered in Super-LumiNova BGW9, which emits a bright blue-green glow in low light, ensuring legibility while reinforcing the modern aesthetic.
Courtesy of UNIMATIC
The handset chosen for the U4S-T-SPW is both functional and stylistically coherent. The hour and minute hands are UNIMATIC’s signature "ladder phantom" style, skeletonized to provide an unobstructed view of the meteorite dial below while offering a large surface area for lume application. The seconds hand is a "reverse lollipop" design, with the lumed circle acting as a counterbalance, and features a vibrant red tip. This small splash of color provides a focal point against the otherwise monochromatic palette of the dial and case, aiding in at-a-glance readability of the seconds. All three hands are treated with Super-LumiNova BGW9, matching the markers on the crystal for a unified nocturnal display.
Powering this celestial timepiece is the Swiss-made Sellita SW200-1 b automatic movement. This caliber is a well-regarded workhorse in the industry, known for its reliability and serviceability. It operates at a frequency of 28,800 beats per hour (4 Hz), which provides a smooth sweep to the seconds hand. The movement contains 26 jewels to reduce friction on key components and offers a power reserve of approximately 38 hours. It also includes a hacking seconds function, allowing the user to stop the seconds hand for precise time-setting. With a stated accuracy of ±12 seconds per day, the Sellita SW200-1 b provides the dependable performance expected of a professional-grade tool watch.
Courtesy of UNIMATIC
The U4S-T-SPW is engineered to withstand demanding environments, a trait that aligns with its rugged, exploration-themed design. The watch is individually tested for water resistance up to 30 atmospheres, equivalent to 300 meters or 1000 feet. This impressive rating is supported by robust construction features, including a substantial 8mm screw-down crown that ensures a watertight seal. The solid titanium caseback is also screwed down and features a detailed engraving of a meteor comparison chart, a thoughtful detail that further solidifies the watch's thematic identity. This combination of features ensures the watch is as capable in function as it is compelling in form.
Comfort and versatility on the wrist are addressed with the inclusion of two distinct strap options. The watch comes fitted with a white nylon keeper two-piece quick-release strap. This strap perfectly matches the Cerakote case and is secured with a custom titanium buckle that is also coated in the same bright-white finish. For an alternative look, a second strap made of a cool-gray TPU (thermoplastic polyurethane) is included in the package. Both straps are equipped with quick-release spring bars, allowing for easy, tool-free changes. The 22mm lug width provides ample opportunity for further customization with other aftermarket straps as well.
Courtesy of UNIMATIC
The entire package is presented with the practical and distinctive flair characteristic of UNIMATIC. Each watch is delivered in an orange UNIMATIC tough pouch, a durable, high-visibility case that protects the watch during shipping and can be repurposed for travel. Also included is a warranty card with a unique ID seal, confirming the authenticity and limited-edition number of the timepiece. This attention to detail in the presentation reinforces the premium, enthusiast-focused nature of the product.
As a highly anticipated release for a major industry event, the UNIMATIC x Massena LAB Modello Quattro U4S-T-SPW is strictly limited to just 60 individually numbered pieces. This scarcity ensures its exclusivity among collectors. The watch was made available exclusively during Geneva Watch Days, from September 4th to September 7th, 2025. The retail price was set at €2,500, excluding VAT. This price point reflects the custom materials, including the genuine meteorite dial and titanium case, the Swiss movement, and the limited-edition nature of this collaborative project.
Case: 40mm titanium case with Cerakote H140 bright-white coating. 49mm lug-to-lug, 13mm thick. 2.8mm flat sapphire crystal with inner anti-reflective coating. Screw-down crown and caseback. Water resistant to 300m (30atm).
Movement: Automatic calibre Sellita SW200-1 b. 28,800 bph, 38-hour power reserve, 26 jewels, hacking seconds.
Dial: Genuine meteorite dial with Widmanstätten pattern. Super-LumiNova® BGW9 ladder phantom hands and reverse lollipop seconds hand. Markers and NASA worm logo are printed on the inner side of the sapphire crystal.
Strap: White nylon keeper two-piece quick-release strap with a titanium Cerakote-coated buckle. Includes an extra cool-gray TPU two-piece quick-release strap.
Price: €2500 (VAT excluded)
Reference Number: U4S-T-SPW
Notes: The final watch in the UNIMATIC and Massena LAB NASA trilogy. Limited to just 60 individually numbered pieces. The dial is cut from a genuine meteorite, making each watch face unique.