Which is cheaper, the Signum Sollus or the Seiko Prospex SPEEDTIMER Mechanical?

At MSRP the Signum Sollus is the cheaper of the two at $529, against $995 for the Seiko Prospex SPEEDTIMER Mechanical — a $466 gap before any retailer discounting.

Which is bigger, the Signum Sollus or the Seiko Prospex SPEEDTIMER Mechanical?

The Signum Sollus wears larger at 40.5mm versus 39.5mm for the Seiko Prospex SPEEDTIMER Mechanical — a 1mm difference across the dial.

Which has better water resistance, the Signum Sollus or the Seiko Prospex SPEEDTIMER Mechanical?

The Signum Sollus is rated to 50m versus 20m for the Seiko Prospex SPEEDTIMER Mechanical.

What movement does the Signum Sollus run compared to the Seiko Prospex SPEEDTIMER Mechanical?

Both watches run automatic movements — the Signum Sollus uses the Miyota 9039 and the Seiko Prospex SPEEDTIMER Mechanical uses the 6R55.

Side by side

Signum SollusvsSeiko Prospex SPEEDTIMER Mechanical

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

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Signum Sollus

signum-sollus-automatic

MSRP $529

Seiko Prospex SPEEDTIMER Mechanical

spb513j1

MSRP $995

At a glance

13 of 29 specs differ

Diameter

Sollus40.5mm

Prospex SPEEDTIMER Mechanical39.5mm

Power Reserve

Sollus—

Prospex SPEEDTIMER Mechanical72h

Water Resistance

Sollus50m

Prospex SPEEDTIMER Mechanical200m

MSRP

Sollus$529

Prospex SPEEDTIMER Mechanical$995

Full specifications

Case

5 specs

Crystal & Dial

4 specs

Crystal Shape

Flat

Curved

AR Coating

Inner

Anti-reflective coating on inner surface

Dial Color

—

Black

Lume

None

LumiBrite on hands and index(es)

Movement

3 specs

Caliber

Miyota 9039

6R55

Power Reserve

—

72h

Jewels

Pricing

1 specs

MSRP

$529

$995

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Signum SollusvsSeiko Prospex SPEEDTIMER Mechanical

At a glance

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