Side by side

Grand Seiko SBGN027vsTissot Seastar 1000 GMT

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

SBGN027
Grand SeikoSBGN027
MSRP $3,700
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.

Grand Seiko SBGN027

Owners widely praise the Grand Seiko SBGN027 for its exceptional Zaratsu polishing, compact 39mm size, and versatile monochrome aesthetic, noting its thin profile and suitability as a grab-and-go watch. The 9F quartz movement delivers highly accurate timekeeping, with one owner reporting +/- 10 seconds per year. However, some find the lume limited, the bracelet lacks micro-adjustments, and the GMT hand can be easily mistaken for the minute hand. One owner reported a black index on the bezel disappearing after a couple of months. On balance, owners rate the Grand Seiko SBGN027 highly for its premium finishing and accurate HAQ GMT movement in a wearable size.

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

11 of 29 specs differ
Diameter
SBGN02739mm
Seastar 1000 GMT40mm
Power Reserve
SBGN02740h
Seastar 1000 GMT40h
Water Resistance
SBGN027200m
Seastar 1000 GMT300m
MSRP
SBGN027$3,700
Seastar 1000 GMT$575

Full specifications

Case

6 specs
Category
GMT
Diver
Diameter
39mm
40mm
Thickness
12.3mm
11.77mm
Lug-to-Lug
45.9mm
40mm
Lug Width
19mm
20mm
Water Resistance
200m
300m

Crystal & Dial

3 specs
AR Coating
Yes
Inner
Indices
Applied
Indexes
Lume
None
Super-LumiNova ®

Movement

1 specs
Caliber
9F86
11 1/2'''

Pricing

1 specs
MSRP
$3,700
$575
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