Side by side

Unimatic Modello Quattro UT4-GMT Toolwatch GMT (40mm)vsWolbrook Skindiver Automatic

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Unimatic Modello Quattro UT4-GMT Toolwatch GMT (40mm)

The Unimatic Modello Quattro UT4-GMT Toolwatch GMT earns strong praise for its rugged engineering and practical design. Reviewers highlight its 360° shock-absorption system and MIL-STD-810 certification—all five prototypes survived 26 drop tests from 4 feet onto concrete—alongside the reliable Ronda 515.24D quartz GMT movement. The short, non-curved lugs sit flat on the wrist, though owners with smaller wrists may find this less comfortable; an owner on a 7.5-inch wrist reports it super comfortable and easy to read. At 80.5 grams, it wears only slightly oversized even on a 6.75-inch wrist. One reviewer notes the titanium variant offers lighter weight and larger dial numerals for improved legibility over the stainless steel version, though the titanium crown is less smooth. Overall, the Modello Quattro UT4-GMT is widely valued for its durable, tool-focused engineering and straightforward quartz reliability at its price point.

Wolbrook Skindiver Automatic

Owners widely praise the Wolbrook Skindiver Automatic 38mm for its vintage-inspired design, compact 38mm size, and tool-like aesthetic, offering good value for its price. The watch features ridiculously bright and long-lasting lume, a clean dial, and a Miyota 9039 no-date movement. Some owners find the push-pull crown a drawback, while others note the clasp and some bracelet links can feel sharp. Opinions are split on the bracelet design, with some finding it confusing and others praising its articulation and micro-adjustments. One owner found the 40mm case felt larger than expected. Overall, owners rate the Wolbrook Skindiver Automatic 38mm highly for its vintage aesthetic and tool-watch appeal at a reasonable price.

At a glance

11 of 29 specs differ
Diameter
Modello Quattro UT4-GMT Toolwatch GMT (40mm)40mm
Skindiver Automatic38mm
Power Reserve
Modello Quattro UT4-GMT Toolwatch GMT (40mm)
Skindiver Automatic
Water Resistance
Modello Quattro UT4-GMT Toolwatch GMT (40mm)300m
Skindiver Automatic200m
MSRP
Modello Quattro UT4-GMT Toolwatch GMT (40mm)$655
Skindiver Automatic$549

Full specifications

Case

7 specs
Category
Diver
Diameter
40mm
38mm
Thickness
0mm
12mm
Lug-to-Lug
0mm
Lug Width
0mm
20mm
Material
Titanium
Water Resistance
300m
200m

Crystal & Dial

1 specs
Crystal
Domed Sapphire

Movement

2 specs
Caliber
Ronda 515.24D (quartz GMT)
Miyota 9039
Type
Quartz
Automatic

Pricing

1 specs
MSRP
$655
$549
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