Which is cheaper, the Helgray Poseidon Diver (Automatic) or the Grand Seiko SBGW291?

At MSRP the Helgray Poseidon Diver (Automatic) is the cheaper of the two at $249, against $5,300 for the Grand Seiko SBGW291 — a $5,051 gap before any retailer discounting.

Which is bigger, the Helgray Poseidon Diver (Automatic) or the Grand Seiko SBGW291?

The Helgray Poseidon Diver (Automatic) wears larger at 40mm versus 36.5mm for the Grand Seiko SBGW291 — a 3.5mm difference across the dial.

Which has better water resistance, the Helgray Poseidon Diver (Automatic) or the Grand Seiko SBGW291?

The Helgray Poseidon Diver (Automatic) is rated to 300m versus 100m for the Grand Seiko SBGW291.

Which has a longer power reserve, the Helgray Poseidon Diver (Automatic) or the Grand Seiko SBGW291?

The Grand Seiko SBGW291 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 Grand Seiko SBGW291?

The Helgray Poseidon Diver (Automatic) runs a automatic caliber (NH35 Warranty), while the Grand Seiko SBGW291 runs a manual (9S64).

Side by side

Helgray Poseidon Diver (Automatic)vsGrand Seiko SBGW291

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 SBGW291

sbgw291g

MSRP $5,300

At a glance

11 of 29 specs differ

Diameter

Poseidon Diver (Automatic)40mm

SBGW29136.5mm

Power Reserve

Poseidon Diver (Automatic)40h

SBGW29172h

Water Resistance

Poseidon Diver (Automatic)300m

SBGW291100m

MSRP

Poseidon Diver (Automatic)$249

SBGW291$5,300

Full specifications

Case

6 specs

Crystal & Dial

1 specs

AR Coating

Inner

Yes

Movement

3 specs

Caliber

NH35 Warranty

9S64

Type

Automatic

Manual

Power Reserve

40h

72h

Pricing

1 specs

MSRP

$249

$5,300

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