Which is bigger, the Seiko Prospex Sea or the Praesidus 38mm Automatic?

The Seiko Prospex Sea wears larger at 42mm versus 38mm for the Praesidus 38mm Automatic — a 4mm difference across the dial.

Which has better water resistance, the Seiko Prospex Sea or the Praesidus 38mm Automatic?

The Seiko Prospex Sea is rated to 300m versus 100m for the Praesidus 38mm Automatic.

Which has a longer power reserve, the Seiko Prospex Sea or the Praesidus 38mm Automatic?

The Seiko Prospex Sea carries a 72-hour power reserve against 40 hours on the Praesidus 38mm Automatic.

What movement does the Seiko Prospex Sea run compared to the Praesidus 38mm Automatic?

Both watches run automatic movements — the Seiko Prospex Sea uses the 6R54 and the Praesidus 38mm Automatic uses the Seiko NH35.

Side by side

Seiko Prospex SeavsPraesidus 38mm Automatic

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Seiko Prospex Sea

hbc001j1

Praesidus 38mm Automatic

P-38-HP-GRSG

MSRP $680

At a glance

14 of 29 specs differ

Diameter

Prospex Sea42mm

38mm Automatic38mm

Power Reserve

Prospex Sea72h

38mm Automatic40h

Water Resistance

Prospex Sea300m

38mm Automatic100m

MSRP

Prospex Sea—

38mm Automatic$680

Full specifications

Case

7 specs

Crystal & Dial

3 specs

AR Coating

Anti-reflective coating on inner surface

Inner

Dial Color

Black

38mm Automatic

Lume

LumiBrite on hands, index(es) and bezel

None

Movement

3 specs

Caliber

6R54

Seiko NH35

Power Reserve

72h

40h

Jewels

Pricing

1 specs

MSRP

—

$680

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Seiko Prospex SeavsPraesidus 38mm Automatic

At a glance

Full specifications

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