Which is cheaper, the Helgray Poseidon Diver (Automatic) or the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition?

At MSRP the Helgray Poseidon Diver (Automatic) is the cheaper of the two at $249, against $2,500 for the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition — a $2,251 gap before any retailer discounting.

Which is bigger, the Helgray Poseidon Diver (Automatic) or the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition?

The Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition wears larger at 42mm versus 40mm for the Helgray Poseidon Diver (Automatic) — a 2mm difference across the dial.

Which has better water resistance, the Helgray Poseidon Diver (Automatic) or the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition?

The Helgray Poseidon Diver (Automatic) is rated to 300m versus 10m for the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition.

Which has a longer power reserve, the Helgray Poseidon Diver (Automatic) or the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition?

The Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition carries a 45-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 SPEEDTIMER Seiko 145th Anniversary Limited Edition?

Both watches run automatic movements — the Helgray Poseidon Diver (Automatic) uses the NH35 Warranty and the Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition uses the 8R48.

Side by side

Helgray Poseidon Diver (Automatic)vsSeiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited 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 SPEEDTIMER Seiko 145th Anniversary Limited Edition

srq059j1

MSRP $2,500

At a glance

12 of 29 specs differ

Diameter

Poseidon Diver (Automatic)40mm

Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition42mm

Power Reserve

Poseidon Diver (Automatic)40h

Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition45h

Water Resistance

Poseidon Diver (Automatic)300m

Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition100m

MSRP

Poseidon Diver (Automatic)$249

Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition$2,500

Full specifications

Case

5 specs

Crystal & Dial

3 specs

Crystal Shape

Flat

Curved

AR Coating

Inner

Anti-reflective coating on inner surface

Lume

None

LumiBrite on hands and index(es)

Movement

3 specs

Caliber

NH35 Warranty

8R48

Power Reserve

40h

45h

Jewels

Pricing

1 specs

MSRP

$249

$2,500

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