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

At MSRP the Praesidus 42mm Automatic is the cheaper of the two at $680, against $3,000 for the Seiko Prospex SPEEDTIMER — a $2,320 gap before any retailer discounting.

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

The Seiko Prospex SPEEDTIMER wears larger at 42.5mm versus 38mm for the Praesidus 42mm Automatic — a 4.5mm difference across the dial.

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

The Praesidus 42mm Automatic is rated to 100m versus 10m for the Seiko Prospex SPEEDTIMER.

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

The Seiko Prospex SPEEDTIMER carries a 45-hour power reserve against 40 hours on the Praesidus 42mm Automatic.

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

Both watches run automatic movements — the Praesidus 42mm Automatic uses the Seiko NH35 and the Seiko Prospex SPEEDTIMER uses the 8R46.

Side by side

Praesidus 42mm AutomaticvsSeiko Prospex SPEEDTIMER

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 SPEEDTIMER

srq037j1

MSRP $3,000

At a glance

14 of 29 specs differ

Diameter

42mm Automatic38mm

Prospex SPEEDTIMER42.5mm

Power Reserve

42mm Automatic40h

Prospex SPEEDTIMER45h

Water Resistance

42mm Automatic100m

Prospex SPEEDTIMER100m

MSRP

42mm Automatic$680

Prospex SPEEDTIMER$3,000

Full specifications

Case

6 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 and index(es)

Movement

3 specs

Caliber

Seiko NH35

8R46

Power Reserve

40h

45h

Jewels

Pricing

1 specs

MSRP

$680

$3,000

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Praesidus 42mm AutomaticvsSeiko Prospex SPEEDTIMER

At a glance

Full specifications

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