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.

Tissot Seastar 1000 GMT at true scale

Seastar 1000 GMT

Unimatic Modello Quattro UT4 Toolwatch Time Only (40mm) at true scale

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 specs
Thickness
11.77mm
n/a
Lug-to-Lug
n/a
n/a
Lug Width
20mm
n/a
Material
Stainless Steel
n/a

Crystal & Dial

3 specs
Crystal
Sapphire
n/a
Indices
Indexes
n/a
Lume
Super-LumiNova ®
None

Movement

1 specs
Caliber
11.5'
Seiko VH31

Pricing

1 specs
MSRP
$575
$515
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Reviews

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

Tissot Seastar 1000 GMT

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.

Unimatic Modello Quattro UT4 Toolwatch Time Only (40mm)

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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