Side by side

Sternglas Naos SolarvsSeiko Astron

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

Naos Solar
SternglasNaos Solar
MSRP $323
Astron
SeikoAstron
MSRP $2,500

At a glance

15 of 29 specs differ
Diameter
Naos Solar38mm
Astron42mm
Power Reserve
Naos Solar
Astron40h
Water Resistance
Naos Solar50m
Astron100m
MSRP
Naos Solar$323
Astron$2,500

Full specifications

Case

7 specs
Category
Dress
GMT
Diameter
38mm
42mm
Thickness
10mm
12.4mm
Lug-to-Lug
42mm
49.5mm
Lug Width
20mm
14mm
Material
Stainless Steel
Titanium
Water Resistance
50m
100m

Crystal & Dial

3 specs
AR Coating
Inner
Super-clear coating
Dial Color
Black
Lume
Luminova Punkten
LumiBrite on hands and index(es)

Movement

4 specs
Caliber
Seiko VJ76
5X83
Type
Solar
Quartz
Power Reserve
40h
Jewels
14

Pricing

1 specs
MSRP
$323
$2,500

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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.

Sternglas Naos Solar

Owners widely praise the Sternglas Naos Solar for its elegant Bauhaus-inspired minimalist dial, slim profile, and value for money. The scratch-resistant curved sapphire crystal and functional date mechanism are noted as durable features, with one owner reporting good wear over a year. The solar power and accuracy are highlighted as practical advantages over automatic movements, which some find loud. However, opinions are split, with some owners finding the watch underwhelming and cheap-looking, like a toy, while others love its appearance in person and its clean, appealing design as a smartwatch alternative. The stock leather strap is described as decent but basic and potentially short for larger wrists, with one owner advising a third-party replacement for durability. One owner of a different variant noted the date font is too small to be useful.

Seiko Astron

Owners widely praise the Seiko Astron for its spectacular technology, solar-powered quartz movement, and GPS time synchronization, making it a convenient grab-and-go option. The watch is frequently noted for its comfortable and lightweight titanium build, with some models featuring well-finished cases and robust ceramic bezels. Reviewers and owners alike highlight the dial's dynamic and shiny appearance, with textured hour markers and high-contrast edges. Accuracy is generally considered good, with figures ranging from +/- 15 seconds per month to within 1/2 second per day, easily corrected by GPS signal. However, some owners note that DST requires manual adjustment and that automatic time syncing depends on proximity to radio wave towers. The price point is a concern for some, who feel it competes with luxury watches without the same aesthetic appeal. One owner pointed out minimal lume and a slight misalignment of the minute hand on their model.

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