Which is cheaper, the Helgray Poseidon Diver (Automatic) or the Grand Seiko SBGH349?

At MSRP the Helgray Poseidon Diver (Automatic) is the cheaper of the two at $249, against $7,800 for the Grand Seiko SBGH349 — a $7,551 gap before any retailer discounting.

Which has better water resistance, the Helgray Poseidon Diver (Automatic) or the Grand Seiko SBGH349?

The Helgray Poseidon Diver (Automatic) is rated to 300m versus 100m for the Grand Seiko SBGH349.

Which has a longer power reserve, the Helgray Poseidon Diver (Automatic) or the Grand Seiko SBGH349?

The Grand Seiko SBGH349 carries a 55-hour power reserve against 40 hours on the Helgray Poseidon Diver (Automatic).

What movement does the Helgray Poseidon Diver (Automatic) run compared to the Grand Seiko SBGH349?

Both watches run automatic movements — the Helgray Poseidon Diver (Automatic) uses the NH35 Warranty and the Grand Seiko SBGH349 uses the 9S85.

Side by side

Helgray Poseidon Diver (Automatic)vsGrand Seiko SBGH349

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

Grand Seiko SBGH349

sbgh349g

MSRP $7,800

At a glance

9 of 29 specs differ

Diameter

Poseidon Diver (Automatic)40mm

SBGH34940mm

Power Reserve

Poseidon Diver (Automatic)40h

SBGH34955h

Water Resistance

Poseidon Diver (Automatic)300m

SBGH349100m

MSRP

Poseidon Diver (Automatic)$249

SBGH349$7,800

Full specifications

Case

5 specs

Crystal & Dial

1 specs

AR Coating

Inner

Yes

Movement

2 specs

Caliber

NH35 Warranty

9S85

Power Reserve

40h

55h

Pricing

1 specs

MSRP

$249

$7,800

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