Side by side

Aera Instruments M-1vsGrand Seiko STGK031

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

M-1
Aera InstrumentsM-1
STGK031
Grand SeikoSTGK031
MSRP $6,600

At a glance

12 of 29 specs differ
Diameter
M-139mm
STGK03130mm
Power Reserve
M-142h
STGK03150h
Water Resistance
M-1100m
STGK031100m
MSRP
M-1—
STGK031$6,600

Full specifications

Case

5 specs
Category
—
Dress
Diameter
39mm
30mm
Thickness
13.14mm
10.5mm
Lug-to-Lug
47.6mm
36.2mm
Lug Width
20mm
15mm

Crystal & Dial

3 specs
AR Coating
Inner
Yes
Dial Color
Dune
Black
Lume
Super-LumiNova
None

Movement

3 specs
Caliber
Sellita SW216-1
9S27
Type
Manual
Automatic
Power Reserve
42h
50h

Pricing

1 specs
MSRP
—
$6,600

Follow this matchup

Get a note when Aera Instruments M-1 vs Grand Seiko STGK031 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
Geckota Airstream
Geckotamicro

Airstream

2 watches · 5 variantsAirstream
36mm·Automatic·101m WR
$299MSRP
—Used
Farer Lethbridge Gold
Farer
Cushion Case

Lethbridge Gold

2 watches · 4 variantsCUSHION CASE
38.5mm
$1,085MSRP
—Used
Yema Wristmaster Slim Small Seconds CMM.29
Yemamicro

Wristmaster Slim Small Seconds CMM.29

2 watches · 8 variantsWristmaster
39mm·Automatic·100m WR
$2,249MSRP
—Used
Lorier Astra Cosmic Blue
Loriermicro

Astra Cosmic Blue

2 watches · 2 variantsAstra
36mm·Automatic
$499MSRP
—Used
Aevig THOR manualwind dresswatch
Aevig

THOR manualwind dresswatch

Ref. thor
40mm·Manual·100m WR
$539MSRP
—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
Lorier Hyperion SII
Loriermicro

Hyperion SII

2 watches · 2 variantsHyperion
39mm·Automatic·200m WR
$699MSRP
—Used
All alternatives to the M-1 →All alternatives to the STGK031 →
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 WatchvsGrand Seiko STGK031Farer Lethbridge GoldvsGrand Seiko STGK031Farer CUSHION CASEvsGrand Seiko STGK031Grand Seiko STGK031vsAevig THOR manualwind dresswatchAera Instruments M-1vsGeckota AirstreamAera Instruments M-1vsYema Wristmaster Slim Small Seconds CMM.29
Edit this comparisonAdd another watch