Tissot Seastar 1000 GMTvsUnimatic Modello Uno UT1-GMT Toolwatch GMT (41.5mm)

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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 Uno UT1-GMT Toolwatch GMT (41.5mm) at true scale

Modello Uno UT1-GMT Toolwatch GMT (41.5mm)

Diameter

40mm

41.5mm

Thickness

11.8mm

n/a

Water Resistance

300m

300m

MSRP

$575

lowest

$760

Movement

11.5'

Ronda 515.24D

Case

5 specs
Diameter
40mm
41.5mm
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'
Ronda 515.24D

Pricing

1 specs
MSRP
$575
$760
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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 Uno UT1-GMT Toolwatch GMT (41.5mm)

The Unimatic Modello Uno UT1-GMT Toolwatch GMT (41.5mm) is praised for its unique and recognizable minimalist design, setting it apart from competitors. Reviewers note its utilitarian, function-first aesthetic with a clean dial and a sandblasted 41.5mm steel case that meets MIL-STD-810 drop test standards. It features a Ronda 515.24D quartz movement with a stated accuracy range of −1 to +20 seconds per month and a 45-month battery life. Some reviewers note that solid quartz alternatives exist for less than its €525 price point. Overall, owners and reviewers rate the Unimatic Modello Uno UT1-GMT Toolwatch GMT (41.5mm) highly for its distinctive design and robust build at its price.

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