Which is cheaper, the Helgray Poseidon Diver (Automatic) or the Seiko Prospex Sea PADI Special Edition?

At MSRP the Helgray Poseidon Diver (Automatic) is the cheaper of the two at $249, against $650 for the Seiko Prospex Sea PADI Special Edition — a $401 gap before any retailer discounting.

Which is bigger, the Helgray Poseidon Diver (Automatic) or the Seiko Prospex Sea PADI Special Edition?

The Seiko Prospex Sea PADI Special Edition wears larger at 41.7mm versus 40mm for the Helgray Poseidon Diver (Automatic) — a 1.7mm difference across the dial.

Which has better water resistance, the Helgray Poseidon Diver (Automatic) or the Seiko Prospex Sea PADI Special Edition?

The Helgray Poseidon Diver (Automatic) is rated to 300m versus 200m for the Seiko Prospex Sea PADI Special Edition.

Which has a longer power reserve, the Helgray Poseidon Diver (Automatic) or the Seiko Prospex Sea PADI Special Edition?

The Seiko Prospex Sea PADI Special Edition 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 Prospex Sea PADI Special Edition?

Both watches run automatic movements — the Helgray Poseidon Diver (Automatic) uses the NH35 Warranty and the Seiko Prospex Sea PADI Special Edition uses the 4R35.

Side by side

Helgray Poseidon Diver (Automatic)vsSeiko Prospex Sea PADI Special 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 PADI Special Edition

srpl53

MSRP $650

At a glance

10 of 29 specs differ

Diameter

Poseidon Diver (Automatic)40mm

Prospex Sea PADI Special Edition41.7mm

Power Reserve

Poseidon Diver (Automatic)40h

Prospex Sea PADI Special Edition41h

Water Resistance

Poseidon Diver (Automatic)300m

Prospex Sea PADI Special Edition200m

MSRP

Poseidon Diver (Automatic)$249

Prospex Sea PADI Special Edition$650

Full specifications

Case

4 specs

Diameter

40mm

41.7mm

Thickness

12mm

12.3mm

Lug-to-Lug

46mm

49.5mm

Water Resistance

300m

200m

Crystal & Dial

2 specs

Crystal

Sapphire

Hardlex

Lume

None

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

NH35 Warranty

4R35

Power Reserve

40h

41h

Jewels

Pricing

1 specs

MSRP

$249

$650

Follow this matchup

Get a note when Helgray Poseidon Diver (Automatic) vs Seiko Prospex Sea PADI Special Edition gets more votes, a community discussion, or a price drop. No account needed.

Keep exploring