Side by side

Spinnaker Dumas AutomaticvsSynchron Poseidon

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

Add a watch
Dumas Automatic
SpinnakerDumas Automatic
MSRP $239
Poseidon
SynchronPoseidon
Buy from Spinnaker ↗
Buy used on eBay ↗
Buy from Synchron ↗
Buy used on eBay ↗

At a glance

10 of 29 specs differ
Diameter
Dumas Automatic44mm
Poseidon41mm
Power Reserve
Dumas Automatic40h
Poseidon68h
Water Resistance
Dumas Automatic300m
Poseidon300m
MSRP
Dumas Automatic$239
Poseidon—

Full specifications

Case

6 specs
Category
Diver
—
Diameter
44mm
41mm
Thickness
15mm
11.9mm
Lug-to-Lug
48mm
45mm
Lug Width
22mm
20mm
Material
316L Stainless Steel
Titanium

Crystal & Dial

1 specs
Dial Color
Blue
Sunshine Yellow

Movement

2 specs
Caliber
SII NH35A
La Joux-Perret G100
Power Reserve
40h
68h

Pricing

1 specs
MSRP
$239
—
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.

Phoibos Wave Master
Phoibosmicro

Wave Master

3 variantsWave Master
42mm·Automatic·300m WR
$309MSRP
—Used
Synchron SEALAB Ti300M
Synchronmicro

SEALAB Ti300M

41mm·Automatic·300m WR
—MSRP
—Used
Spinnaker Tesei Forged Carbon
Spinnakermicro

Tesei Forged Carbon

4 watches · 10 variantsTesei
43mm·Automatic·300m WR
$550MSRP
—Used
Astor + Banks Sea Ranger M2
Astor + Banksmicro

Sea Ranger M2

8 variantsSea Ranger
40mm·Automatic·300m WR
$1,149MSRP
—Used
Spinnaker Hass Automatic
Spinnakermicro

Hass Automatic

10 variantsHass
43mm·Automatic·300m WR
$445MSRP
—Used
Zelos Spearfish 3
Zelosmicro

Spearfish 3

3 watches · 17 variantsSpearfish
40mm·Automatic·200m WR
$749MSRP
—Used
Zelos Eagle 2
Zelosmicro

Eagle 2

5 variantsEagle
39mm·Automatic·100m WR
$899MSRP
—Used
Helgray Poseidon Diver (Automatic)
Helgraymicro

Poseidon Diver (Automatic)

Ref. poseidon-diver-automatic
40mm·Automatic·300m WR
$249MSRP
—Used
All alternatives to the Dumas Automatic →All alternatives to the Poseidon →
Explore the full catalog

Follow this matchup

Get a note when Spinnaker Dumas Automatic vs Synchron Poseidon 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.

Phoibos Wave MastervsSynchron PoseidonSpinnaker Tesei Forged CarbonvsSynchron PoseidonSpinnaker Hass AutomaticvsSynchron PoseidonSpinnaker Wreck AutomaticvsSynchron PoseidonSpinnaker Dumas AutomaticvsSynchron SEALAB Ti300MAstor + Banks Sea Ranger M2vsSpinnaker Dumas Automatic
Edit this comparisonAdd another watchExplore more 40–45mm watches