Side by side

Spinnaker Croft 39 GMTvsSeiko Astron

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

Croft 39 GMT
SpinnakerCroft 39 GMT
MSRP $445
Astron
SeikoAstron
MSRP $2,200

At a glance

13 of 29 specs differ
Diameter
Croft 39 GMT39mm
Astron41.2mm
Power Reserve
Croft 39 GMT40h
Astron40h
Water Resistance
Croft 39 GMT100m
Astron100m
MSRP
Croft 39 GMT$445
Astron$2,200

Full specifications

Case

6 specs
Category
GMT
Dress
Diameter
39mm
41.2mm
Thickness
13mm
12mm
Lug-to-Lug
47mm
48.5mm
Lug Width
20mm
14mm
Material
316L Stainless Steel
Titanium

Crystal & Dial

3 specs
AR Coating
Inner
Super-clear coating
Dial Color
Red
Black
Lume
None
LumiBrite on hands and index(es)

Movement

3 specs
Caliber
Seiko NH34A
3X62
Type
Automatic
Quartz
Jewels
25
10

Pricing

1 specs
MSRP
$445
$2,200

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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.

Seiko Astron

Owners widely praise the Seiko Astron for its spectacular time-telling technology, GPS time sync, and grab-and-go convenience, with many calling it the best watch they have ever owned. Reviewers and owners highlight the well-managed dial detail, textured hour markers, and high-contrast edges, as well as the well-finished case and bracelet. Some find the lightweight titanium build and quick bracelet adjustment contribute to comfortable wearability. Accuracy is noted as +/- 15 seconds per month without GPS, though the autonomous quartz movement can be easily reset by looking at the sky. Criticisms include DST not being automatically implemented, recessed buttons requiring a sharp object for adjustment, and sparse lume with no 12 o'clock marker. Some owners feel the price point is too expensive for its aesthetic appeal. Overall, owners rate the Seiko Astron highly for its advanced time-telling technology and convenient features.

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