
UT4-GMT
Individually numberedRef: UWK-UT4-GMT€ 550,00
The Modello Quattro GMT Toolwatch UT4-GMT is part of the second UNIMATIC permanent Toolwatch edition, built for active lifestyles and adventure. This Made-in-Italy quartz GMT dive watch features a Swiss Made Ronda 515.24D movement, the 360° protection system, and 300M water resistance, tested to MIL-STD-810H standards. Key features include custom variable Arabic numerals, GMT window at 12h, date window at 6h, and comes in a practical travel pouch.
- Swiss Made Ronda 515.24D movement with GMT and date function
- 360° protection system, MIL-STD-810H certified
- Custom variable Arabic numerals
- Comes in a practical travel pouch
In stock
The second permanent collection of UNIMATIC watches is built to meet the demands of an active lifestyle. Thanks to the in-house designed 360° protection system and with its 300m water rugged built, these four references are tested to withstand MIL 810 H standard.
Individually
numbered serie
40mm
case diameter with the bezel
Swiss Ronda 515.24D
Quartz high accuracy movement
GMT & DATE
complications
MIL-STD-810H
tested
360°
PROTECTION SYSTEM
300m
water resistant
Sandblasted
Stainless steel finish
24 MONTHS
worldwide warranty
Description
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.
Features
Movement
- Quartz Swiss Made Ronda 515.24D
- Date & GMT function
- Hacking second hand
- Accuracy ±15 s/month
- ≈3y Power reserve
Case
- Diameter 40mm / 41.5mm with the bezel
- Fixed monoblock bezel
- 316 stainless steel case sandblasted finish
- Alchemical Sun 8mm screw-down crown
Dial
- Black matte dial
- Printed arabic numerals
- GMT window h12
- Date window h6
- Super-LumiNova® C1
- White open second rail
- International orange dial trims
DURABILITY & PROTECTION
- 300m ≈ 1000ft ≈30atm WR Individually tested
- 2.8mm thick double domed sapphire
- Inner side anti-reflective coating
- 360° protection system
Design
- UNIMATIC 360° X-ray caseback
- Individually numbered in yearly batches
- Military specification design
Watch kit
- Black nylon keeper two-piece quick-release strap
- Unimatic tough pouch, warranty card with unique ID seal
Focus

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 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.
