Which is cheaper, the Seiko Prospex SPEEDTIMER or the Timefactors Aerotimer?

At MSRP the Timefactors Aerotimer is the cheaper of the two at $416, against $750 for the Seiko Prospex SPEEDTIMER — a $334 gap before any retailer discounting.

Which is bigger, the Seiko Prospex SPEEDTIMER or the Timefactors Aerotimer?

The Timefactors Aerotimer wears larger at 42mm versus 41.4mm for the Seiko Prospex SPEEDTIMER — a 0.6mm difference across the dial.

Which has better water resistance, the Seiko Prospex SPEEDTIMER or the Timefactors Aerotimer?

The Timefactors Aerotimer is rated to 100m versus 10m for the Seiko Prospex SPEEDTIMER.

What movement does the Seiko Prospex SPEEDTIMER run compared to the Timefactors Aerotimer?

The Seiko Prospex SPEEDTIMER runs a quartz caliber (V192), while the Timefactors Aerotimer runs a mecaquartz (Seiko VK64 (Meca-Quartz)).

Side by side

Seiko Prospex SPEEDTIMERvsTimefactors Aerotimer

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

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Seiko Prospex SPEEDTIMER

ssc911

MSRP $750

Timefactors Aerotimer

precista-prs-45-aerotimer

MSRP $416

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Buy from Timefactors ↗

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At a glance

11 of 29 specs differ

Diameter

Prospex SPEEDTIMER41.4mm

Aerotimer42mm

Power Reserve

Prospex SPEEDTIMER40h

Aerotimer—

Water Resistance

Prospex SPEEDTIMER100m

Aerotimer100m

MSRP

Prospex SPEEDTIMER$750

Aerotimer$416

Full specifications

Case

4 specs

Crystal & Dial

3 specs

Crystal Shape

Curved

Flat

AR Coating

Anti-reflective coating on inner surface

Inner

Lume

LumiBrite on hands and index(es)

SuperLuminova C3

Movement

3 specs

Caliber

V192

Seiko VK64 (Meca-Quartz)

Type

Quartz

Mecaquartz

Power Reserve

40h

—

Pricing

1 specs

MSRP

$750

$416

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Seiko Prospex SPEEDTIMERvsTimefactors Aerotimer

At a glance

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