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Modello Quattro UT4-GMT Toolwatch - GMT
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- Made-in-Italy quartz GMT dive watch
- 360° protection system, MIL-STD-810H certified
- UNIMATIC travel pouch & black two-piece quick-release nylon strap included
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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.
Carefree 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
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 Quattro Toolwatch UT4-GMT is a Made-in-Italy quartz GMT dive watch with a matte black dial featuring printed Arabic numerals, GMT and date windows, Super-LumiNova® C1 lume 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 optimal visibility in all lighting conditions. 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 Quattro Toolwatch UT4-GMT is perfect 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
- ≈45 months power reserve
- Diameter 40mm
- Fixed monoblock bezel
- 316 stainless steel case sandblasted finish
- Alchemical Sun 8mm screw-down crown
- Black matte dial with 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
- 2.8mm thick double domed sapphire
- Inner side anti-reflective coating
- 360° protection system
- UNIMATIC 360° X-ray caseback
- Individually numbered in yearly batches
- Military specification design
- UNIMATIC travel pouch, warranty card with unique ID seal
Want to know more?
Frequently asked questions
We choose each movement to match the unique character of the watch. Our Time-Only Automatic models are powered by the Japanese NH35A or the Swiss SW200-1, driven by the natural motion of your wrist to honor traditional watchmaking. For our GMT series, we rely on the Japanese NH34 or the Swiss ETA 2893, allowing for seamless tracking of multiple time zones.
Meanwhile, our Toolwatch Series features high-precision, battery-powered calibers paired with our proprietary protection system, designed to withstand extreme impacts. This includes the Japanese VH31 ‘Sweep Second’ for our time-only models and the Swiss Ronda 515.24H for our GMTs.
For our chronographs, we select the caliber that best fits the watch’s mission: the premium Swiss Automatic SW510, or the Japanese VK64 Meca-quartz. The latter offers a hybrid ‘best of both worlds’ solution, combining quartz accuracy with the tactile, mechanical feel of a traditional chronograph.
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.




