Which is cheaper, the Spinnaker Dumas Automatic or the Timefactors Aerotimer?

At MSRP the Spinnaker Dumas Automatic is the cheaper of the two at $239, against $416 for the Timefactors Aerotimer — a $177 gap before any retailer discounting.

Which is bigger, the Spinnaker Dumas Automatic or the Timefactors Aerotimer?

The Spinnaker Dumas Automatic wears larger at 44mm versus 42mm for the Timefactors Aerotimer — a 2mm difference across the dial.

Which has better water resistance, the Spinnaker Dumas Automatic or the Timefactors Aerotimer?

The Spinnaker Dumas Automatic is rated to 300m versus 100m for the Timefactors Aerotimer.

What movement does the Spinnaker Dumas Automatic run compared to the Timefactors Aerotimer?

The Spinnaker Dumas Automatic runs a automatic caliber (NH35), while the Timefactors Aerotimer runs a mecaquartz (Seiko VK64 (Meca-Quartz)).

Side by side

Spinnaker Dumas AutomaticvsTimefactors Aerotimer

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

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Spinnaker Dumas Automatic

dumas-blue-yonder-sp-5081-dd

MSRP $239

See the full Dumas Automatic

Timefactors Aerotimer

precista-prs-45-aerotimer

MSRP $416

See the full Aerotimer

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At a glance

13 of 29 specs differ

Diameter

Dumas Automatic44mm

Aerotimer42mm

Power Reserve

Dumas Automatic40h

Aerotimer—

Water Resistance

Dumas Automatic300m

Aerotimer100m

MSRP

Dumas Automatic$239

Aerotimer$416

Full specifications

Case

7 specs

Crystal & Dial

2 specs

Dial Color

Blue

Black

Lume

None

SuperLuminova C3

Movement

3 specs

Caliber

NH35

Seiko VK64 (Meca-Quartz)

Type

Automatic

Mecaquartz

Power Reserve

40h

—

Pricing

1 specs

MSRP

$239

$416

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Spinnaker Dumas AutomaticvsTimefactors Aerotimer

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