Which is cheaper, the Praesidus 42mm Automatic or the Seiko Prospex Sea?

At MSRP the Praesidus 42mm Automatic is the cheaper of the two at $680, against $900 for the Seiko Prospex Sea — a $220 gap before any retailer discounting.

Which is bigger, the Praesidus 42mm Automatic or the Seiko Prospex Sea?

The Seiko Prospex Sea wears larger at 41mm versus 38mm for the Praesidus 42mm Automatic — a 3mm difference across the dial.

Which has better water resistance, the Praesidus 42mm Automatic or the Seiko Prospex Sea?

The Seiko Prospex Sea is rated to 200m versus 100m for the Praesidus 42mm Automatic.

Which has a longer power reserve, the Praesidus 42mm Automatic or the Seiko Prospex Sea?

The Seiko Prospex Sea carries a 70-hour power reserve against 40 hours on the Praesidus 42mm Automatic.

What movement does the Praesidus 42mm Automatic run compared to the Seiko Prospex Sea?

Both watches run automatic movements — the Praesidus 42mm Automatic uses the Seiko NH35 and the Seiko Prospex Sea uses the 6R35.

Side by side

Praesidus 42mm AutomaticvsSeiko Prospex Sea

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

Praesidus 42mm Automatic

P-42-HP-GRSG

MSRP $680

Seiko Prospex Sea

spb317j1

MSRP $900

At a glance

15 of 29 specs differ

Diameter

42mm Automatic38mm

Prospex Sea41mm

Power Reserve

42mm Automatic40h

Prospex Sea70h

Water Resistance

42mm Automatic100m

Prospex Sea200m

MSRP

42mm Automatic$680

Prospex Sea$900

Full specifications

Case

7 specs

Crystal & Dial

4 specs

Crystal Shape

Flat

Curved

AR Coating

Inner

Anti-reflective coating on inner surface

Dial Color

42mm Automatic

Black

Lume

None

LumiBrite on hands, index(es) and bezel

Movement

3 specs

Caliber

Seiko NH35

6R35

Power Reserve

40h

70h

Jewels

Pricing

1 specs

MSRP

$680

$900

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Praesidus 42mm AutomaticvsSeiko Prospex Sea

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Full specifications

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