Which is cheaper, the Helgray Poseidon Diver (Automatic) or the William Wood International Association of Fire?

At MSRP the Helgray Poseidon Diver (Automatic) is the cheaper of the two at $249, against $820 for the William Wood International Association of Fire — a $571 gap before any retailer discounting.

Which is bigger, the Helgray Poseidon Diver (Automatic) or the William Wood International Association of Fire?

The William Wood International Association of Fire wears larger at 41mm versus 40mm for the Helgray Poseidon Diver (Automatic) — a 1mm difference across the dial.

Which has better water resistance, the Helgray Poseidon Diver (Automatic) or the William Wood International Association of Fire?

The Helgray Poseidon Diver (Automatic) is rated to 300m versus 100m for the William Wood International Association of Fire.

What movement does the Helgray Poseidon Diver (Automatic) run compared to the William Wood International Association of Fire?

Both watches run automatic movements — the Helgray Poseidon Diver (Automatic) uses the NH35 Warranty and the William Wood International Association of Fire uses the Seiko NH35.

Side by side

Helgray Poseidon Diver (Automatic)vsWilliam Wood International Association of Fire

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

William Wood International Association of Fire

william-wood-iafc

MSRP $820

At a glance

9 of 29 specs differ

Diameter

Poseidon Diver (Automatic)40mm

International Association of Fire41mm

Power Reserve

Poseidon Diver (Automatic)40h

International Association of Fire40h

Water Resistance

Poseidon Diver (Automatic)300m

International Association of Fire100m

MSRP

Poseidon Diver (Automatic)$249

International Association of Fire$820

Full specifications

Case

5 specs

Diameter

40mm

41mm

Thickness

12mm

15mm

Lug-to-Lug

46mm

49mm

Material

Stainless Steel

316L Stainless Steel

Water Resistance

300m

100m

Crystal & Dial

2 specs

Crystal

Sapphire

Domed Sapphire

Dial Color

Black

Standard

Movement

1 specs

Caliber

NH35 Warranty

Seiko NH35

Pricing

1 specs

MSRP

$249

$820

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