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

Owners widely praise the Wolbrook Skindiver II Automatic for its retro aesthetic, comfortable 40mm wearability, and legible dial with faux patina, with the brushed finish, drilled lugs, and included Beads of Rice bracelet and tropic strap being highlighted. The watch features a Citizen/Miyota 8315 movement, adjusted in France to ±15 seconds per day, offering a 60-hour power reserve and 200m water resistance with a box sapphire crystal. Some owners note the 20mm strap size as potentially problematic, and Wolbrook's policy of not honoring the warranty on resold watches is a significant criticism. On balance, owners and reviewers rate the Wolbrook Skindiver II Automatic highly for its compelling retro design and solid build at its price point.

At a glance

10 of 29 specs differ
Diameter
Modello Quattro UT4-GMT Toolwatch GMT (40mm)40mm
Skindiver II Automatic40mm
Power Reserve
Modello Quattro UT4-GMT Toolwatch GMT (40mm)
Skindiver II Automatic
Water Resistance
Modello Quattro UT4-GMT Toolwatch GMT (40mm)300m
Skindiver II Automatic200m
MSRP
Modello Quattro UT4-GMT Toolwatch GMT (40mm)$655
Skindiver II Automatic$579

Full specifications

Case

6 specs
Category
Diver
Thickness
0mm
12.7mm
Lug-to-Lug
0mm
Lug Width
0mm
20mm
Material
316L Stainless Steel
Water Resistance
300m
200m

Crystal & Dial

1 specs
Crystal
Domed Sapphire

Movement

2 specs
Caliber
Ronda 515.24D (quartz GMT)
Miyota 9015
Type
Quartz
Automatic

Pricing

1 specs
MSRP
$655
$579
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