Tissot Seastar 1000 GMTvsUnimatic Modello Quattro UT4 Toolwatch Time Only (40mm)
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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Seastar 1000 GMT

Modello Quattro UT4 Toolwatch Time Only (40mm)
Diameter
40mm
40mm
Thickness
11.8mm
n/a
Water Resistance
300m
300m
MSRP
$575
$515
lowest
Movement
11.5'
Seiko VH31
Case
4 specsCrystal & Dial
3 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Tissot Seastar 1000 GMT for its sapphire crystal, improved finishing, and GMT complication, with one owner expressing deep satisfaction. A potential drawback noted by the community is that Swiss quartz movements, unlike some Japanese counterparts, may exhibit second hands that do not precisely align with dial markers. On balance, owners rate the Tissot Seastar 1000 GMT highly for its build quality and useful GMT function at its price point.
The Unimatic Modello Quattro UT4 Toolwatch Time Only (40mm) is widely praised for its ultra-rugged, durable construction and Unimatic's signature utilitarian aesthetic, meeting MIL-STD-810 standards. Reviewers highlight its grab-and-go convenience and value as a tough quartz option. Some sources note a slimmer, more wearable 12.05mm case profile, attributed to the Seiko VH31 quartz movement, which is considered perfect for its set-and-forget nature. However, one reviewer found its new dial design too conventional, noting a resemblance to other watches, and another suggested solid quartz watches can be found for less. Overall, owners and reviewers rate the Unimatic Modello Quattro UT4 Toolwatch Time Only (40mm) highly for its robust build and practical quartz convenience at a good value.
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