Side by side

Hamilton Jazzmaster Day Date AutovsSeiko Astron

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

What people say

Owners + reviewers, side by side

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

Hamilton Jazzmaster Day Date Auto

Owners widely praise the Hamilton Jazzmaster Day Date Auto for its versatility as an everyday and business-casual timepiece. One owner specifically notes it felt the best on their wrist after trying multiple options. On balance, owners rate the Hamilton Jazzmaster Day Date Auto highly for its comfortable wearability and suitability for various occasions.

From video reviewers

The watch offers excellent build quality for its price point, with an 80-hour power reserve from the H-40 movement. The 50-meter water resistance is a limitation. Reviewers disagreed on the aesthetic appeal of the date window at 6 o'clock.

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.

At a glance

14 of 29 specs differ
Diameter
Jazzmaster Day Date Auto40mm
Astron41.2mm
Power Reserve
Jazzmaster Day Date Auto80h
Astron
Water Resistance
Jazzmaster Day Date Auto50m
Astron100m
MSRP
Jazzmaster Day Date Auto$1,045
Astron$2,200

Full specifications

Case

6 specs
Diameter
40mm
41.2mm
Thickness
11.52mm
12mm
Lug-to-Lug
0mm
48.5mm
Lug Width
20mm
14mm
Material
Stainless Steel
Titanium
Water Resistance
50m
100m

Crystal & Dial

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

Movement

4 specs
Caliber
H-40 (ETA 2834-2 base)
3X62
Type
Automatic
Quartz
Power Reserve
80h
0h
Jewels
0
10

Pricing

1 specs
MSRP
$1,045
$2,200
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