Which is cheaper, the Helgray Poseidon Diver (Automatic) or the Grand Seiko SBGN027?

At MSRP the Helgray Poseidon Diver (Automatic) is the cheaper of the two at $249, against $3,700 for the Grand Seiko SBGN027 — a $3,451 gap before any retailer discounting.

Which is bigger, the Helgray Poseidon Diver (Automatic) or the Grand Seiko SBGN027?

The Helgray Poseidon Diver (Automatic) wears larger at 40mm versus 39mm for the Grand Seiko SBGN027 — a 1mm difference across the dial.

Which has better water resistance, the Helgray Poseidon Diver (Automatic) or the Grand Seiko SBGN027?

The Helgray Poseidon Diver (Automatic) is rated to 300m versus 200m for the Grand Seiko SBGN027.

What movement does the Helgray Poseidon Diver (Automatic) run compared to the Grand Seiko SBGN027?

The Helgray Poseidon Diver (Automatic) runs a automatic caliber (NH35 Warranty), while the Grand Seiko SBGN027 runs a quartz (9F86).

Side by side

Helgray Poseidon Diver (Automatic)vsGrand Seiko SBGN027

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 SBGN027

sbgn027g

MSRP $3,700

At a glance

10 of 29 specs differ

Diameter

Poseidon Diver (Automatic)40mm

SBGN02739mm

Power Reserve

Poseidon Diver (Automatic)40h

SBGN02740h

Water Resistance

Poseidon Diver (Automatic)300m

SBGN027200m

MSRP

Poseidon Diver (Automatic)$249

SBGN027$3,700

Full specifications

Case

6 specs

Crystal & Dial

1 specs

AR Coating

Inner

Yes

Movement

2 specs

Caliber

NH35 Warranty

9F86

Type

Automatic

Quartz

Pricing

1 specs

MSRP

$249

$3,700

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