Side by side

Seiko AstronvsTissot Seastar 1000 GMT

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Astron
SeikoAstron
MSRP $2,500
Seastar 1000 GMT
TissotSeastar 1000 GMT
MSRP $575
What people say

Owners + reviewers, side by side

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

Seiko Astron

Owners widely praise the Seiko Astron for its spectacular technology, solar-powered quartz movement, and GPS time synchronization, making it a convenient grab-and-go option. The watch is frequently noted for its comfortable and lightweight titanium build, with some models featuring well-finished cases and robust ceramic bezels. Reviewers and owners alike highlight the dial's dynamic and shiny appearance, with textured hour markers and high-contrast edges. Accuracy is generally considered good, with figures ranging from +/- 15 seconds per month to within 1/2 second per day, easily corrected by GPS signal. However, some owners note that DST requires manual adjustment and that automatic time syncing depends on proximity to radio wave towers. The price point is a concern for some, who feel it competes with luxury watches without the same aesthetic appeal. One owner pointed out minimal lume and a slight misalignment of the minute hand on their model.

Tissot Seastar 1000 GMT

Owners widely praise the Tissot Seastar 1000 GMT for its sapphire crystal, 300m water resistance, and GMT complication, with one owner expressing deep satisfaction. A point of contention for some is that Swiss quartz movements may exhibit second-hand misalignment with markers, unlike certain Japanese quartz movements. On balance, owners rate the Tissot Seastar 1000 GMT highly for its robust features and value.

At a glance

13 of 29 specs differ
Diameter
Astron42mm
Seastar 1000 GMT40mm
Power Reserve
Astron40h
Seastar 1000 GMT40h
Water Resistance
Astron100m
Seastar 1000 GMT300m
MSRP
Astron$2,500
Seastar 1000 GMT$575

Full specifications

Case

7 specs
Category
GMT
Diver
Diameter
42mm
40mm
Thickness
12.4mm
11.77mm
Lug-to-Lug
49.5mm
40mm
Lug Width
14mm
20mm
Material
Titanium
Stainless Steel
Water Resistance
100m
300m

Crystal & Dial

3 specs
AR Coating
Super-clear coating
Inner
Indices
Applied
Indexes
Lume
LumiBrite on hands and index(es)
Super-LumiNova ®

Movement

2 specs
Caliber
5X83
11 1/2'''
Jewels
14
25

Pricing

1 specs
MSRP
$2,500
$575
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