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

At MSRP the Spinnaker Cahill Automatic is the cheaper of the two at $350, against $2,200 for the Aera Instruments C-1 — a $1,850 gap before any retailer discounting.

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

The Spinnaker Cahill Automatic is rated to 200m versus 100m for the Aera Instruments C-1.

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

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

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

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

Side by side

Aera Instruments C-1vsSpinnaker Cahill 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 Cahill Automatic

cahill-automatic-moss-green-sp-5064-02

MSRP $350

At a glance

10 of 29 specs differ

Diameter

C-142mm

Cahill Automatic42mm

Power Reserve

C-156h

Cahill Automatic40h

Water Resistance

C-1100m

Cahill Automatic200m

MSRP

C-1$2,200

Cahill Automatic$350

Full specifications

Case

5 specs

Crystal & Dial

1 specs

Dial Color

Cloud

Green

Movement

3 specs

Caliber

SW510 BH B

SII NH35A

Power Reserve

56h

40h

Jewels

Pricing

1 specs

MSRP

$2,200

$350

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Aera Instruments C-1vsSpinnaker Cahill Automatic

At a glance

Full specifications

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