Which is cheaper, the Helgray Poseidon Diver (Automatic) or the Spinnaker Bradner GMT?

At MSRP the Helgray Poseidon Diver (Automatic) is the cheaper of the two at $249, against $299 for the Spinnaker Bradner GMT — a $50 gap before any retailer discounting.

Which is bigger, the Helgray Poseidon Diver (Automatic) or the Spinnaker Bradner GMT?

The Spinnaker Bradner GMT wears larger at 42mm versus 40mm for the Helgray Poseidon Diver (Automatic) — a 2mm difference across the dial.

Which has better water resistance, the Helgray Poseidon Diver (Automatic) or the Spinnaker Bradner GMT?

The Helgray Poseidon Diver (Automatic) is rated to 300m versus 180m for the Spinnaker Bradner GMT.

What movement does the Helgray Poseidon Diver (Automatic) run compared to the Spinnaker Bradner GMT?

Both watches run automatic movements — the Helgray Poseidon Diver (Automatic) uses the NH35 Warranty and the Spinnaker Bradner GMT uses the Seiko NH34A.

Side by side

Helgray Poseidon Diver (Automatic)vsSpinnaker Bradner GMT

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

Helgray Poseidon Diver (Automatic)

poseidon-diver-automatic

MSRP $249

Spinnaker Bradner GMT

bradner-gmt-automatic-abbott-brown-sp-5121-22

MSRP $299

At a glance

10 of 29 specs differ

Diameter

Poseidon Diver (Automatic)40mm

Bradner GMT42mm

Power Reserve

Poseidon Diver (Automatic)40h

Bradner GMT40h

Water Resistance

Poseidon Diver (Automatic)300m

Bradner GMT180m

MSRP

Poseidon Diver (Automatic)$249

Bradner GMT$299

Full specifications

Case

7 specs

Crystal & Dial

1 specs

Dial Color

Black

Brown

Movement

1 specs

Caliber

NH35 Warranty

Seiko NH34A

Pricing

1 specs

MSRP

$249

$299

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