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Modello Uno UT1-GMT Toolwatch - GMT
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- Swiss Made Ronda 515.24D movement with date & GMT function
- 360° protection system, MIL-STD-810H certified
- Custom Arabic numerals and countdown bezel
Related references
In stock
Estimated shipping within 2/4 business days.
You may return the product within 14 days.
24 months warranty.




Shock resistant
The 360° protection system is designed in-house and made in Italy to the highest standards. It is realised in a special blend of thermoplastic polyurethane (TPU) material. Its custom construction, composed of a 360° protection shell that perfectly holds the movement and a dial top protective ring, allows the watch to withstand extreme environmental stress while still keeping it super light.
CUSTOM Variable font
The variable font system is a custom-designed watch typeface that can be finely tuned for optimal legibility, weight, and dial production techniques—offering endless variations in numeral thickness and width.
Everyday-ready watch
The Toolwatch line is engineered to endure the harshest conditions. It has been tested to meet MIL-STD-810 standards—a U.S. military specification that ensures equipment is built and tested for real-world environmental challenges. Rather than merely simulating environmental settings, this rigorous standard replicates their actual effects, ensuring durability and reliability throughout the product’s service life.
TRAVEL-READY GMT & DATE complications
The GMT and date complications make your toolwatch more than just a tool, but a true travel companion. Whether you're crossing time zones or just navigating a packed day, these features add a layer of ease and versatility that fits any journey.



The Modello Uno Toolwatch UT1-GMT is a Made-in-Italy quartz GMT dive watch with a matte black countdown bezel, black dial with printed Arabic numerals, GMT and date windows, Super-LumiNova® C1 markers, white second rail, and international orange dial trims. Time is indicated with phantom ladder hands and a black reverse lollipop seconds hand with orange tip.
Protected by a flat anti-reflective sapphire crystal, the watch ensures maximum legibility under any light condition. The sandblasted 316L stainless steel case, screw-in caseback, 8 mm crown, and premium gaskets provide individually tested 300M (30 ATM ≈ 1000ft) water resistance.
Timing accuracy is guaranteed by the Swiss Made Ronda 515.24D quartz movement with GMT and date functions, fitted with a Made-in-Italy TPU anti-shock system. The watch comes on a black two-piece quick-release nylon strap with sandblasted stainless steel hardware signed UNIMATIC, fitting 22 mm lugs.
The caseback features UNIMATIC 360° X-ray engraving. Covered by a 24-month worldwide warranty, the Modello Uno Toolwatch UT1-GMT is ideal for collectors, divers, and travelers and comes in a practical travel pouch.
- Quartz Swiss Made Ronda 515.24D
- Date & GMT function
- Hacking second hand
- Accuracy ±15 s/month
- ≈3y Power reserve
- Diameter 40mm / 41.5mm with the bezel
- 120 clicks mono-directional security bezel
- Fixed monoblock bezel
- 316 stainless steel case sandblasted finish
- Alchemical Sun 8mm screw-down crown
- Black matte dial
- Printed arabic numerals
- GMT window h12
- Date window h6
- Super-LumiNova® C1
- White open second rail
- International orange dial trims
- 300m ≈ 1000ft ≈30atm WR Individually tested
- 2.5mm thick double domed sapphire
- Inner side anti-reflective coating
- 360° protection system
- Modello Uno case design with sandblasted finish
- Individually numbered in yearly batches
- Variable Font System high legibility numerals
- UNIMATIC 360° X-ray caseback
- Military specification design
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Frequently asked questions
We choose each movement to match the unique character of the watch. Our Automatic models - typically powered by the NH35A or the SW200-1 - are driven by the natural motion of your wrist, honoring the heritage of traditional watchmaking. Meanwhile, our Toolwatch Series features high-precision, battery-powered calibers paired with our proprietary protection system, designed to withstand impacts and drops. For our chronograph models, we selected the VK31 movement: the current market offers very few automatic chronograph movements that combine reliability with accessible pricing, making this caliber the most dependable and practical choice for our purpose-built watches. A meca-quartz movement is a hybrid movement that combines quartz timekeeping with mechanical chronograph components.
Absolutely. Every UNIMATIC diver is water-resistant to 300 m (1000 ft) and individually tested to ensure perfect seal integrity. Each piece features a heavy-duty screw-down caseback, a screw-down crown with high-quality gaskets, and a 120-click mono-directional bezel, meeting and often exceeding professional diving standards.
The only precaution required before entering the water is to ensure the crown is fully screwed down, guaranteeing the watch maintains its complete water-resistant performance.
Whether it belongs to a limited edition or our permanent line, every UNIMATIC watch is individually numbered on the caseback. This unique ID serves as a mark of authenticity and craftsmanship, ensuring that your specific timepiece is one-of-a-kind. For limited runs, it marks its place in a finite series; for our core collection, it highlights our commitment to quality limiting it to a yearly production batch. Exclusivity is a pillar of our design philosophy.
They are built as modern tough tools. We use 316L surgical-grade stainless steel for the cases and double-domed, anti-reflective Sapphire crystals, which are virtually scratch-proof. Whether you are in a boardroom or the North Sea, the watch is designed to withstand impact and harsh environments.
We use high-grade Super-LumiNova (typically C3 or BGW9) on our dials and hands. The luminous material charges from exposure to any light source and then releases a strong, long-lasting glow, ensuring reliable visibility whenever you need it.



