Side by side

Sheffield 1AvsUnimatic Modello Quattro UT4-GMT Toolwatch GMT (40mm)

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.

Sheffield 1A

Owners widely praise the Sheffield 1A for its superb quality, sturdiness, and value, with many finding its blue dial appealing and its construction more substantial than comparable models. One owner noted expensive shipping fees as a drawback, and another suggested the bezel action could be crisper. Overall, owners consider the Sheffield 1A a no-brainer for its affordability and quality.

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.

At a glance

13 of 29 specs differ
Diameter
1A40mm
Modello Quattro UT4-GMT Toolwatch GMT (40mm)40mm
Power Reserve
1A
Modello Quattro UT4-GMT Toolwatch GMT (40mm)
Water Resistance
1A200m
Modello Quattro UT4-GMT Toolwatch GMT (40mm)300m
MSRP
1A$223
Modello Quattro UT4-GMT Toolwatch GMT (40mm)$655

Full specifications

Case

6 specs
Category
Diver
Thickness
12.8mm
0mm
Lug-to-Lug
46mm
0mm
Lug Width
20mm
0mm
Material
Stainless Steel
Water Resistance
200m
300m

Crystal & Dial

3 specs
Crystal
Sapphire
Dial Color
White/Blue
Black
Lume
Swiss blue lume
None

Movement

3 specs
Caliber
Seiko NH35
Ronda 515.24D
Type
Automatic
Quartz
Power Reserve
0h

Pricing

1 specs
MSRP
$223
$655
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