Which is cheaper, the Praesidus 42mm Automatic or the Seiko Prospex Sea Save the Ocean Special Edition?

At MSRP the Seiko Prospex Sea Save the Ocean Special Edition is the cheaper of the two at $650, against $680 for the Praesidus 42mm Automatic — a $30 gap before any retailer discounting.

Which is bigger, the Praesidus 42mm Automatic or the Seiko Prospex Sea Save the Ocean Special Edition?

The Seiko Prospex Sea Save the Ocean Special Edition wears larger at 43.8mm versus 38mm for the Praesidus 42mm Automatic — a 5.8mm difference across the dial.

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

The Seiko Prospex Sea Save the Ocean Special Edition 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 Save the Ocean Special Edition?

The Seiko Prospex Sea Save the Ocean Special Edition carries a 41-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 Save the Ocean Special Edition?

Both watches run automatic movements — the Praesidus 42mm Automatic uses the Seiko NH35 and the Seiko Prospex Sea Save the Ocean Special Edition uses the 4R35.

Side by side

Praesidus 42mm AutomaticvsSeiko Prospex Sea Save the Ocean Special Edition

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 Save the Ocean Special Edition

srpe33

MSRP $650

At a glance

14 of 29 specs differ

Diameter

42mm Automatic38mm

Prospex Sea Save the Ocean Special Edition43.8mm

Power Reserve

42mm Automatic40h

Prospex Sea Save the Ocean Special Edition41h

Water Resistance

42mm Automatic100m

Prospex Sea Save the Ocean Special Edition200m

MSRP

42mm Automatic$680

Prospex Sea Save the Ocean Special Edition$650

Full specifications

Case

7 specs

Crystal & Dial

3 specs

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

4R35

Power Reserve

40h

41h

Jewels

Pricing

1 specs

MSRP

$680

$650

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