Side by side

Mark Time Watches M 4vsHelgray Poseidon Diver (Automatic)

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

Add a watch
M 4
Mark Time WatchesM 4
Poseidon Diver (Automatic)
HelgrayPoseidon Diver (Automatic)
MSRP $249
Buy from Mark Time Watches ↗
Buy used on eBay ↗
Buy from Helgray ↗
Buy used on eBay ↗

At a glance

7 of 29 specs differ
Diameter
M 439mm
Poseidon Diver (Automatic)40mm
Power Reserve
M 4—
Poseidon Diver (Automatic)40h
Water Resistance
M 4300m
Poseidon Diver (Automatic)300m
MSRP
M 4—
Poseidon Diver (Automatic)$249

Full specifications

Case

3 specs
Category
—
Diver
Diameter
39mm
40mm
Thickness
12.1mm
12mm

Crystal & Dial

1 specs
Dial Color
—
Black

Movement

2 specs
Caliber
Miyota 9039
NH35 Warranty
Power Reserve
—
40h

Pricing

1 specs
MSRP
—
$249
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.

Galo Super200 Dark Edition
Galomicro

Super200 Dark Edition

2 watches · 6 variantsSuper200
39mm·Automatic·200m WR
$488MSRP
—Used
Vaer D5 Tropic Auto
Vaermicro
Tropic

D5 Tropic Auto

Ref. d5-tropic-usa-diver
39mm·Automatic·200m WR
$699MSRP
—Used
Baltic Aquascaphe Classic
Balticmicro

Aquascaphe Classic

2 variantsAquascaphe Classic
39mm·Automatic·200m WR
$648MSRP
—Used
Bremont Supermarine 300M
Bremontmicro

Supermarine 300M

8 watches · 39 variantsSupermarine
40mm·Automatic·300m WR
$3,550MSRP
—Used
Geckota Ocean-Scout Dive Watch
Geckotamicro

Ocean-Scout Dive Watch

5 variantsOcean-Scout
38.5mm·Automatic·200m WR
$375MSRP
—Used
Islander Islander Hudson "Harpoon Diver" 40mm Watch with Degrading Black Dial #ISL-302
Islandermicro
Under $50

Islander Hudson "Harpoon Diver" 40mm Watch with Degrading Black Dial #ISL-302

9 watches · 9 variantsUnder $50
40mm·Automatic·200m WR
$649MSRP
—Used
KUOE SOMBRERO 90-011
KUOEmicro

SOMBRERO 90-011

5 variantsSombrero
38mm·Automatic·200m WR
$980MSRP
—Used
Spinnaker Spence 300
Spinnakermicro

Spence 300

11 variantsSpence
40mm·Automatic·300m WR
$650MSRP
—Used
All alternatives to the M 4 →All alternatives to the Poseidon Diver (Automatic) →
Explore the full catalog

Follow this matchup

Get a note when Mark Time Watches M 4 vs Helgray Poseidon Diver (Automatic) 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.

Helgray Poseidon Diver (Automatic)vsGalo Super200 Dark EditionHelgray Poseidon Diver (Automatic)vsGalo Super200Baltic Aquascaphe ClassicvsHelgray Poseidon Diver (Automatic)Geckota Ocean-Scout Dive WatchvsHelgray Poseidon Diver (Automatic)Mark Time Watches M 4vsGalo Super200 Dark EditionMark Time Watches M 4vsVaer D5 Tropic Auto
Edit this comparisonAdd another watchExplore more 38–41mm watches