Which is cheaper, the Helgray Poseidon Diver (Automatic) or the Baltic Prismic Stone?

At MSRP the Helgray Poseidon Diver (Automatic) is the cheaper of the two at $249, against $1,404 for the Baltic Prismic Stone — a $1,155 gap before any retailer discounting.

Which is bigger, the Helgray Poseidon Diver (Automatic) or the Baltic Prismic Stone?

The Helgray Poseidon Diver (Automatic) wears larger at 40mm versus 36mm for the Baltic Prismic Stone — a 4mm difference across the dial.

Which has better water resistance, the Helgray Poseidon Diver (Automatic) or the Baltic Prismic Stone?

The Helgray Poseidon Diver (Automatic) is rated to 300m versus 30m for the Baltic Prismic Stone.

Which has a longer power reserve, the Helgray Poseidon Diver (Automatic) or the Baltic Prismic Stone?

The Baltic Prismic Stone carries a 50-hour power reserve against 40 hours on the Helgray Poseidon Diver (Automatic).

What movement does the Helgray Poseidon Diver (Automatic) run compared to the Baltic Prismic Stone?

The Helgray Poseidon Diver (Automatic) runs a automatic caliber (NH35 Warranty), while the Baltic Prismic Stone runs a manual (La Joux-Perret D100).

Side by side

Helgray Poseidon Diver (Automatic)vsBaltic Prismic Stone

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

Baltic Prismic Stone

prismic-stone-bloodstone

MSRP $1,404

At a glance

11 of 29 specs differ

Diameter

Poseidon Diver (Automatic)40mm

Prismic Stone36mm

Power Reserve

Poseidon Diver (Automatic)40h

Prismic Stone50h

Water Resistance

Poseidon Diver (Automatic)300m

Prismic Stone30m

MSRP

Poseidon Diver (Automatic)$249

Prismic Stone$1,404

Full specifications

Case

5 specs

Crystal & Dial

2 specs

AR Coating

Inner

Yes

Dial Color

Black

Bloodstone

Movement

3 specs

Caliber

NH35 Warranty

La Joux-Perret D100

Type

Automatic

Manual

Power Reserve

40h

50h

Pricing

1 specs

MSRP

$249

$1,404

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