Which is cheaper, the Helgray Poseidon Diver (Automatic) or the Seiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition?

At MSRP the Helgray Poseidon Diver (Automatic) is the cheaper of the two at $249, against $1,750 for the Seiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition — a $1,501 gap before any retailer discounting.

Which is bigger, the Helgray Poseidon Diver (Automatic) or the Seiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition?

The Seiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition wears larger at 42mm versus 40mm for the Helgray Poseidon Diver (Automatic) — a 2mm difference across the dial.

Which has a longer power reserve, the Helgray Poseidon Diver (Automatic) or the Seiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition?

The Seiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition carries a 72-hour power reserve against 40 hours on the Helgray Poseidon Diver (Automatic).

What movement does the Helgray Poseidon Diver (Automatic) run compared to the Seiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition?

Both watches run automatic movements — the Helgray Poseidon Diver (Automatic) uses the NH35 Warranty and the Seiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition uses the 6R54.

Side by side

Helgray Poseidon Diver (Automatic)vsSeiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition

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

Seiko Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition

spb509j1

MSRP $1,750

At a glance

9 of 29 specs differ

Diameter

Poseidon Diver (Automatic)40mm

Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition42mm

Power Reserve

Poseidon Diver (Automatic)40h

Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition72h

Water Resistance

Poseidon Diver (Automatic)300m

Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition300m

MSRP

Poseidon Diver (Automatic)$249

Prospex Sea Seiko Diver’s Watch 60th Anniversary Limited Edition$1,750

Full specifications

Case

3 specs

Diameter

40mm

42mm

Thickness

12mm

13.3mm

Lug-to-Lug

46mm

48.6mm

Crystal & Dial

2 specs

AR Coating

Inner

Anti-reflective coating on inner surface

Lume

None

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

NH35 Warranty

6R54

Power Reserve

40h

72h

Jewels

Pricing

1 specs

MSRP

$249

$1,750

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