Which is cheaper, the Helgray Poseidon Diver (Automatic) or the Seiko 5 Sports SKX series?

At MSRP the Helgray Poseidon Diver (Automatic) is the cheaper of the two at $249, against $495 for the Seiko 5 Sports SKX series — a $246 gap before any retailer discounting.

Which is bigger, the Helgray Poseidon Diver (Automatic) or the Seiko 5 Sports SKX series?

The Seiko 5 Sports SKX series wears larger at 42.5mm versus 40mm for the Helgray Poseidon Diver (Automatic) — a 2.5mm difference across the dial.

Which has better water resistance, the Helgray Poseidon Diver (Automatic) or the Seiko 5 Sports SKX series?

The Helgray Poseidon Diver (Automatic) is rated to 300m versus 10m for the Seiko 5 Sports SKX series.

Which has a longer power reserve, the Helgray Poseidon Diver (Automatic) or the Seiko 5 Sports SKX series?

The Seiko 5 Sports SKX series carries a 41-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 5 Sports SKX series?

Both watches run automatic movements — the Helgray Poseidon Diver (Automatic) uses the NH35 Warranty and the Seiko 5 Sports SKX series uses the 4R34.

Side by side

Helgray Poseidon Diver (Automatic)vsSeiko 5 Sports SKX series

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 5 Sports SKX series

ssk001

MSRP $495

At a glance

11 of 29 specs differ

Diameter

Poseidon Diver (Automatic)40mm

5 Sports SKX series42.5mm

Power Reserve

Poseidon Diver (Automatic)40h

5 Sports SKX series41h

Water Resistance

Poseidon Diver (Automatic)300m

5 Sports SKX series100m

MSRP

Poseidon Diver (Automatic)$249

5 Sports SKX series$495

Full specifications

Case

5 specs

Crystal & Dial

2 specs

Crystal

Sapphire

Hardlex

Lume

None

LumiBrite on hands and index(es)

Movement

3 specs

Caliber

NH35 Warranty

4R34

Power Reserve

40h

41h

Jewels

Pricing

1 specs

MSRP

$249

$495

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