Side by side

Spinnaker Croft 39 GMTvsGrand Seiko STGK031

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

Croft 39 GMT
SpinnakerCroft 39 GMT
MSRP $445
STGK031
Grand SeikoSTGK031
MSRP $6,600

At a glance

11 of 29 specs differ
Diameter
Croft 39 GMT39mm
STGK03130mm
Power Reserve
Croft 39 GMT40h
STGK03150h
Water Resistance
Croft 39 GMT100m
STGK031100m
MSRP
Croft 39 GMT$445
STGK031$6,600

Full specifications

Case

6 specs
Category
GMT
Dress
Diameter
39mm
30mm
Thickness
13mm
10.5mm
Lug-to-Lug
47mm
36.2mm
Lug Width
20mm
15mm
Material
316L Stainless Steel
Stainless Steel

Crystal & Dial

2 specs
AR Coating
Inner
Yes
Dial Color
Red
Black

Movement

2 specs
Caliber
Seiko NH34A
9S27
Power Reserve
40h
50h

Pricing

1 specs
MSRP
$445
$6,600

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What people say

Owners + reviewers, side by side

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

Spinnaker Croft 39 GMT

Owners praise the Spinnaker Croft 39 GMT for its colorful design, NH34 GMT movement, and reasonable price, noting high-standard manufacturing on the case, bezel, and bracelet. One owner finds the 43mm case and 51mm lug-to-lug dimensions too large for the design, preferring a 39-40mm case size. A potential issue with the lume was noted by one user. On balance, owners value the Spinnaker Croft 39 GMT for its attractive design and build quality at its price point, though sizing is a point of contention for some.

Grand Seiko STGK031

Grand Seiko STGK031 owners widely praise its subtle, light pink dial that shifts to appear white or silver depending on lighting, its refined 30mm case size, and its simple elegance. Some find the 30mm sizing perfect for wearability, with one owner noting it is ideal for those who find 38mm watches too large. The Zaratsu polishing is also a noted strength. However, the Calibre 9S27 movement has a 50-hour power reserve and an accuracy range of +8 to -3 seconds per day, which some consider modest for the price. On balance, owners and reviewers rate the Grand Seiko STGK031 highly for its versatile dial and refined 30mm case.

From video reviewers

The 50-hour power reserve of the Calibre 9S27 movement is a shared strength. The 36mm lug-to-lug measurement is a weakness. Reviewers disagreed on the premium feel of the polished stainless steel case and bracelet compared to Zaratsu polishing.

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