Side by side

Spinnaker Dumas AutomaticvsSeiko Astron

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

Dumas Automatic
SpinnakerDumas Automatic
MSRP $239
Astron
SeikoAstron
MSRP $2,200

At a glance

14 of 29 specs differ
Diameter
Dumas Automatic44mm
Astron41.2mm
Power Reserve
Dumas Automatic40h
Astron40h
Water Resistance
Dumas Automatic300m
Astron100m
MSRP
Dumas Automatic$239
Astron$2,200

Full specifications

Case

7 specs
Category
Diver
Dress
Diameter
44mm
41.2mm
Thickness
15mm
12mm
Lug-to-Lug
48mm
48.5mm
Lug Width
22mm
14mm
Material
316L Stainless Steel
Titanium
Water Resistance
300m
100m

Crystal & Dial

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

Movement

3 specs
Caliber
SII NH35A
3X62
Type
Automatic
Quartz
Jewels
25
10

Pricing

1 specs
MSRP
$239
$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 Dumas Automatic

Owners widely praise the Spinnaker Dumas Automatic for its attractive textured blue dial, applied indices, and well-finished case, noting its comfortable wearability due to a short lug-to-lug distance. Some owners flag the use of mineral crystal instead of sapphire and a bracelet with a learning curve and loose keeper. Overall, owners rate the Spinnaker Dumas Automatic highly for its aesthetics and case finishing at its price point.

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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