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

At MSRP the Praesidus 42mm Automatic is the cheaper of the two at $680, against $995 for the Seiko Prospex Land Mechanical — a $315 gap before any retailer discounting.

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

The Seiko Prospex Land Mechanical wears larger at 39.5mm versus 38mm for the Praesidus 42mm Automatic — a 1.5mm difference across the dial.

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

The Praesidus 42mm Automatic is rated to 100m versus 20m for the Seiko Prospex Land Mechanical.

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

The Seiko Prospex Land Mechanical carries a 72-hour power reserve against 40 hours on the Praesidus 42mm Automatic.

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

Both watches run automatic movements — the Praesidus 42mm Automatic uses the Seiko NH35 and the Seiko Prospex Land Mechanical uses the 6R55.

Side by side

Praesidus 42mm AutomaticvsSeiko Prospex Land Mechanical

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 Land Mechanical

spb503j1

MSRP $995

At a glance

13 of 29 specs differ

Diameter

42mm Automatic38mm

Prospex Land Mechanical39.5mm

Power Reserve

42mm Automatic40h

Prospex Land Mechanical72h

Water Resistance

42mm Automatic100m

Prospex Land Mechanical200m

MSRP

42mm Automatic$680

Prospex Land Mechanical$995

Full specifications

Case

6 specs

Diameter

38mm

39.5mm

Thickness

11mm

12.7mm

Lug-to-Lug

45mm

46.4mm

Lug Width

18mm

20mm

Material

316L Stainless Steel

Stainless Steel

Water Resistance

100m

200m

Crystal & Dial

3 specs

AR Coating

Inner

Anti-reflective coating on inner surface

Dial Color

42mm Automatic

Black

Lume

None

LumiBrite on hands and index(es)

Movement

3 specs

Caliber

Seiko NH35

6R55

Power Reserve

40h

72h

Jewels

Pricing

1 specs

MSRP

$680

$995

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