Which is cheaper, the Aera Instruments C-1 or the Spinnaker Dumas Automatic?

At MSRP the Spinnaker Dumas Automatic is the cheaper of the two at $239, against $2,200 for the Aera Instruments C-1 — a $1,961 gap before any retailer discounting.

Which is bigger, the Aera Instruments C-1 or the Spinnaker Dumas Automatic?

The Spinnaker Dumas Automatic wears larger at 44mm versus 42mm for the Aera Instruments C-1 — a 2mm difference across the dial.

Which has better water resistance, the Aera Instruments C-1 or the Spinnaker Dumas Automatic?

The Spinnaker Dumas Automatic is rated to 300m versus 100m for the Aera Instruments C-1.

Which has a longer power reserve, the Aera Instruments C-1 or the Spinnaker Dumas Automatic?

The Aera Instruments C-1 carries a 56-hour power reserve against 40 hours on the Spinnaker Dumas Automatic.

What movement does the Aera Instruments C-1 run compared to the Spinnaker Dumas Automatic?

Both watches run automatic movements — the Aera Instruments C-1 uses the SW510 BH B and the Spinnaker Dumas Automatic uses the SII NH35A.

Side by side

Aera Instruments C-1vsSpinnaker Dumas Automatic

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

Aera Instruments C-1

MSRP $2,200

Spinnaker Dumas Automatic

dumas-blue-yonder-sp-5081-dd

MSRP $239

At a glance

11 of 29 specs differ

Diameter

C-142mm

Dumas Automatic44mm

Power Reserve

C-156h

Dumas Automatic40h

Water Resistance

C-1100m

Dumas Automatic300m

MSRP

C-1$2,200

Dumas Automatic$239

Full specifications

Case

6 specs

Crystal & Dial

1 specs

Dial Color

Cloud

Blue

Movement

3 specs

Caliber

SW510 BH B

SII NH35A

Power Reserve

56h

40h

Jewels

Pricing

1 specs

MSRP

$2,200

$239

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Aera Instruments C-1vsSpinnaker Dumas Automatic

At a glance

Full specifications

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