Side by side

Seiko AstronvsStudio Underd0g Project Passion Crew

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

Astron
SeikoAstron
MSRP $2,500
Project Passion Crew
Studio Underd0gProject Passion Crew
MSRP $840

At a glance

14 of 29 specs differ
Diameter
Astron42mm
Project Passion Crew39.5mm
Power Reserve
Astron40h
Project Passion Crew40h
Water Resistance
Astron100m
Project Passion Crew
MSRP
Astron$2,500
Project Passion Crew$840

Full specifications

Case

7 specs
Category
GMT
Chronograph
Diameter
42mm
39.5mm
Thickness
12.4mm
Lug-to-Lug
49.5mm
Lug Width
14mm
Material
Titanium
Stainless Steel
Water Resistance
100m

Crystal & Dial

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

Movement

3 specs
Caliber
5X83
Type
Quartz
Automatic
Jewels
14
25

Pricing

1 specs
MSRP
$2,500
$840

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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.

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.

Studio Underd0g Project Passion Crew

The Studio Underd0g Project Passion Crew is noted for its unique "coarse dégradé amber and royal purple" multi-layer dial and manual-wind Sellita SW510 M chronograph movement with a 63-hour power reserve. However, its accessibility is severely limited as it is only sold as a $64,900 set with another watch. Overall, reviewers highlight the distinctive dial and chronograph movement as key features, though the high price and bundled sale significantly restrict its availability.

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