Side by side

Aera Instruments M-1vsSeestern S450 Ocean Star

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

M-1
Aera InstrumentsM-1
S450 Ocean Star
SeesternS450 Ocean Star
MSRP $299

At a glance

14 of 29 specs differ
Diameter
M-139mm
S450 Ocean Star40mm
Power Reserve
M-142h
S450 Ocean Star41h
Water Resistance
M-1100m
S450 Ocean Star100m
MSRP
M-1—
S450 Ocean Star$299

Full specifications

Case

5 specs
Category
—
Diver
Diameter
39mm
40mm
Thickness
13.14mm
12mm
Lug-to-Lug
47.6mm
48mm
Material
Stainless Steel
316L Stainless Steel

Crystal & Dial

2 specs
Dial Color
Dune
White
Lume
Super-LumiNova
Tritium

Movement

6 specs
Caliber
Sellita SW216-1
TMI NH35A
Type
Manual
Automatic
Beat Rate
28,800 vph
21,600 vph
Power Reserve
42h
41h
Jewels
25
24
Complications
None
GMT, Date

Pricing

1 specs
MSRP
—
$299

Follow this matchup

Get a note when Aera Instruments M-1 vs Seestern S450 Ocean Star gets more votes, a community discussion, or a price drop. No account needed.

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.

CWC Cabot Steel Limited Edition Watch
CWC

Cabot Steel Limited Edition Watch

Ref. cabot-steel
40mm·Manual
$1,583MSRP
—Used
Vaer D5 Meridian Auto
Vaermicro
Meridian

D5 Meridian Auto

6 watches · 23 variantsMeridian
39mm·Automatic·200m WR
$679MSRP
—Used
Farer Lethbridge Gold
Farer
Cushion Case

Lethbridge Gold

2 watches · 4 variantsCUSHION CASE
38.5mm
$1,085MSRP
—Used
Zelos Spearfish 3
Zelosmicro

Spearfish 3

3 watches · 17 variantsSpearfish
40mm·Automatic·200m WR
$749MSRP
—Used
Zelos Swordfish 3
Zelosmicro

Swordfish 3

40/42mm
2 watches · 35 variantsSwordfish
40/42mm·Automatic·200m WR
$399MSRP
—Used
Aevig THOR manualwind dresswatch
Aevig

THOR manualwind dresswatch

Ref. thor
40mm·Manual·100m WR
$539MSRP
—Used
Henry Archer Vesterhav
Henry Archermicro

Vesterhav

2 watches · 44 variantsVesterhav
40mm·Automatic·200m WR
$4,599MSRP
—Used
Tornek-Rayville CISO M38 MAC V SOG
Tornek-Rayville

CISO M38 MAC V SOG

Ref. ciso-m38-mac-v-sog
38mm·Automatic·100m WR
$745MSRP
—Used
All alternatives to the M-1 →All alternatives to the S450 Ocean Star →
Explore the full catalog
Adjacent matchups

People also compared

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

CWC Cabot Steel Limited Edition WatchvsSeestern S450 Ocean StarFarer Lethbridge GoldvsSeestern S450 Ocean StarFarer CUSHION CASEvsSeestern S450 Ocean StarSeestern S450 Ocean StarvsAevig THOR manualwind dresswatchAera Instruments M-1vsVaer D5 Meridian AutoAera Instruments M-1vsZelos Spearfish 3
Edit this comparisonAdd another watchExplore more 38–41mm watches