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

lug2lug doesn't sell watches. Buy links open the brand's or seller's own site. Some links are affiliate links: lug2lug may earn a commission at no extra cost to you. Disclosures

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 Toolwatch Diver (41.5mm) at true scale

Modello Uno UT1 Toolwatch Diver (41.5mm)

Diameter

40mm

41.5mm

Thickness

11.8mm

n/a

Water Resistance

300m

300m

MSRP

$575

lowest

$620

Movement

11.5'

Seiko VH31

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'
Seiko VH31

Pricing

1 specs
MSRP
$575
$620
Keep your wishlist and collection together in the appExplore the app

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 Toolwatch Diver (41.5mm)

The Unimatic Modello Uno UT1 Toolwatch Diver (41.5mm) is praised for its unique and recognizable design language, distinguishing it from other watches in its price range. Reviewers highlight its rugged, utilitarian aesthetic with a sandblasted 41.5mm case and a minimalist dial emphasizing legibility, featuring Arabic numerals and full minute markers. The Seiko VH31 mecaquartz movement is noted for its sweeping second hand, offering accuracy of approximately ±10–15 seconds per month and up to three years of battery life. The watch demonstrates ruggedness, having passed MIL-STD-810 drop tests with its shock-protected movement. Some owners, however, found the weight, fit, and finishing disappointing. Overall, owners and reviewers rate the Unimatic Modello Uno UT1 Toolwatch Diver (41.5mm) highly for its distinctive design and tool-watch functionality at its price point.

Similar watches

Matched to the watches above on size, movement, style and price, microbrands first. Open any one to dig in.

DiscussionNot started

Also compared

Comparisons nearby in the catalog: alternatives to the watches above paired against the matchup.