Unimatic x Massena LAB U1-SPG “NASA Artemis” Limited Edition Review

Space-Inspired Masterpiece

When it comes to modern tool watches, Unimatic has built a reputation for minimalist design, rugged durability, and limited-edition collaborations that collectors go crazy for. Their latest release, the Unimatic x Massena LAB U1-SPG “NASA Artemis” Limited Edition, takes things to another level—quite literally—by celebrating NASA’s Artemis program, the ambitious mission aimed at returning humans to the Moon and eventually Mars.

This watch is a fusion of space-age inspiration, Massena LAB’s signature vintage-influenced aesthetics, and Unimatic’s utilitarian dive watch DNA. With only 350 pieces produced, the U1-SPG is an exclusive timepiece that delivers a striking design with robust performance.

Let’s take a deep dive into what makes this NASA-themed Unimatic stand out.

Design & Aesthetics: A Cosmic Tribute

The U1-SPG “NASA Artemis” stays true to Unimatic’s signature industrial, no-nonsense design language but introduces subtle vintage cues and NASA-inspired details. The brushed stainless steel case (40mm in diameter, 49mm lug-to-lug) retains the familiar U1 silhouette but is paired with a stunning satin gold PVD finish, a nod to the gold-plated visors of astronauts' helmets.

The dial is where the magic happens. A crisp matte white surface represents the Moon’s stark landscape, while the black minute markers and gold accents evoke a retro-futuristic feel reminiscent of NASA’s early spaceflight instruments. The bold NASA “worm” logo at 6 o’clock is a standout feature, a detail that instantly elevates the watch’s collectibility. The Massena LAB signature at 12 o’clock is subtle but reinforces the collaboration’s premium craftsmanship.

The absence of a date window keeps the dial clean and symmetrical, allowing the simple yet effective visual contrast to shine. The hands and hour markers are filled with Super-LumiNova, ensuring optimal legibility in low-light conditions—whether you’re on Earth or floating in the vast expanse of space.

Case & Build Quality: Rugged Yet Refined

Like all Unimatic U1 models, the U1-SPG is built to withstand extreme conditions. The 316L stainless steel case is highly durable and water-resistant up to 300 meters (1000 feet), making it a true tool watch despite its space-centric design. The screw-down caseback is engraved with NASA’s Artemis mission logo, adding another layer of exclusivity.

The screw-down crown at 3 o’clock ensures a secure fit, with aggressive knurling for easy operation, even with gloves on. The 120-click unidirectional bezel is fully gold PVD-coated, with a brushed steel insert that features a countdown scale instead of a traditional dive-time marker—an interesting choice that fits the scientific precision of space exploration.

The sapphire crystal with anti-reflective coating ensures excellent scratch resistance and readability, further reinforcing the watch’s high-quality construction.

Movement: Reliable Timekeeping

Inside the U1-SPG beats the reliable Seiko NH35A automatic movement—a well-known workhorse known for its 41-hour power reserve, 21,600 vph frequency, and hacking seconds function. While it’s not a high-end Swiss caliber, the NH35A is a dependable, easy-to-service movement that aligns with Unimatic’s philosophy of rugged tool watches.

Given the space-inspired theme, it would have been interesting to see a chronometer-grade movement or even a moon-phase complication, but the NH35A keeps things simple and reliable.

Strap & Wearability: Comfortable & Versatile

The U1-SPG comes fitted with a black TPU rubber strap, a perfect choice for a tool watch. It’s comfortable, flexible, and durable—ideal for both daily wear and outdoor adventures. The brushed stainless steel buckle, also coated in gold PVD, adds a cohesive look.

For those looking to switch things up, the 22mm lug width makes it easy to pair with NATO straps, leather options, or even a stainless steel bracelet for a dressier look.

At 40mm in diameter and 49mm lug-to-lug, the watch wears comfortably on a variety of wrist sizes. While it has a bold presence, the relatively short lugs keep it balanced and wearable.

Limited Edition & Collectability: A Future Space-Era Classic?

With only 350 pieces produced, the Unimatic x Massena LAB U1-SPG “NASA Artemis” is undoubtedly a collector’s piece. The NASA collaboration, the unique gold finish, and the Artemis mission tribute make it particularly desirable for space enthusiasts and watch collectors alike.

Unimatic’s limited editions tend to sell out quickly, and with the growing interest in space-themed watches (think Omega Speedmaster and Bulova Lunar Pilot), the U1-SPG has strong potential to appreciate in value over time.

Final Verdict: Should You Buy the U1-SPG “NASA Artemis”?

Pros:

✅ Unique Space-Inspired Design – Gold PVD finish, NASA branding, and the Artemis mission logo make it stand out.
✅ Limited Edition – Only 350 pieces, ensuring exclusivity.
✅ Rugged & Capable – 300m water resistance, sapphire crystal, and solid build quality.
✅ Reliable Movement – Seiko NH35A is dependable and easy to service.
✅ Great Wearability – 40mm case with short lugs makes it suitable for most wrist sizes.

Cons:

❌ NH35A Movement is Basic – While reliable, some collectors may prefer a Swiss automatic calibre.
❌ Premium Pricing for a Seiko-Based Watch – Limited edition status adds value, but some may find the price tag steep compared to other Unimatic releases.
❌ No Bracelet Option – Would have been great to see an integrated metal bracelet for added versatility.

Final Thoughts

The Unimatic x Massena LAB U1-SPG “NASA Artemis” is a beautifully executed space-inspired dive watch that pays homage to NASA’s next great mission. It blends Unimatic’s signature tool-watch ruggedness with Massena LAB’s vintage aesthetics, all wrapped up in a limited-edition gold PVD case that makes it truly special.

While the NH35A movement may not impress high-end collectors, the design, build quality, and exclusivity make this a compelling piece for anyone who appreciates NASA history and bold, minimalist watchmaking. If you can get your hands on one before they disappear, it’s a worthy addition to any collection.

🚀 Final Rating: 8.5/10 – A unique and well-built timepiece with great storytelling, perfect for space enthusiasts and Unimatic fans alike.