Side by side

Slow Watches O 01vsSeiko Astron

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

Add a watch
O 01
Slow WatchesO 01
Astron
SeikoAstron
MSRP $2,500
Buy from Slow Watches ↗
Buy used on eBay ↗
Buy from Seiko ↗
Buy used on eBay ↗

At a glance

13 of 29 specs differ
Diameter
O 0142.5mm
Astron42mm
Power Reserve
O 01—
Astron40h
Water Resistance
O 01100m
Astron100m
MSRP
O 01—
Astron$2,500

Full specifications

Case

6 specs
Category
—
GMT
Diameter
42.5mm
42mm
Thickness
9.8mm
12.4mm
Lug-to-Lug
46mm
49.5mm
Lug Width
—
14mm
Material
Stainless Steel
Titanium

Crystal & Dial

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

Movement

3 specs
Caliber
Ronda 505.24
5X83
Power Reserve
—
40h
Jewels
25
14

Pricing

1 specs
MSRP
—
$2,500
Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Sternglas Taiga GMT
Sternglasmicro

Taiga GMT

2 variantsTaiga GMT
42mm·Quartz·100m WR
$237MSRP
—Used
Farer Segrave III
Farermicro
Monopusher Gmt

Segrave III

Ref. segrave
41mm·100m WR
$1,995MSRP
—Used
Slow Watches Jo
Slow Watchesmicro

Jo

4 variantsRef. slow-jo-01-one-hand-watch
38mm·Quartz·100m WR
$319MSRP
—Used
Helgray Skyfighter (Refurbished)
Helgraymicro

Skyfighter (Refurbished)

Ref. skyfighter-refurbished
42mm·Quartz
$199MSRP
—Used
AVI-8 Hawker Hurricane Carey Dual Time
AVI-8micro

Hawker Hurricane Carey Dual Time

9 watches · 54 variantsHawker
43mm·Quartz
$260MSRP
—Used
Audaz ADZ-3020
Audaz

ADZ-3020

6 variantsRef. adz-3020-03
42mm·Quartz·200m WR
$240MSRP
—Used
CWC Cabot Sea Falcon Watch
CWCmicro
Cabot Chronograph

Cabot Sea Falcon Watch

Ref. cabot-sea-falcon-chrono-diver-watch
41mm·Quartz·200m WR
$749MSRP
—Used
Smith & Bradley Draper Quartz
Smith & Bradley

Draper Quartz

Ref. draper-quartz-mens-watch
42mm·Quartz·200m WR
$149MSRP
—Used
All alternatives to the O 01 →All alternatives to the Astron →
Explore the full catalog

Follow this matchup

Get a note when Slow Watches O 01 vs Seiko Astron gets more votes, a community discussion, or a price drop. No account needed.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.

Seiko AstronvsSternglas Taiga GMTSlow Watches JovsSeiko AstronSlow Watches Slow JovsSeiko AstronAudaz ADZ-3020vsSeiko AstronFarer Segrave IIIvsSlow Watches O 01Helgray Skyfighter (Refurbished)vsSlow Watches O 01
Edit this comparisonAdd another watch