Side by side

Aera Instruments C-1vsSmiths Armstrong Siddeley

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

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C-1
Aera InstrumentsC-1
MSRP $2,200
Armstrong Siddeley
SmithsArmstrong Siddeley
MSRP $980
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Buy from Smiths ↗
Buy used on eBay ↗

At a glance

8 of 29 specs differ
Diameter
C-142mm
Armstrong Siddeley42mm
Power Reserve
C-156h
Armstrong Siddeley—
Water Resistance
C-1100m
Armstrong Siddeley100m
MSRP
C-1$2,200
Armstrong Siddeley$980

Full specifications

Case

2 specs
Thickness
15.75mm
12mm
Lug-to-Lug
49.55mm
52mm

Crystal & Dial

1 specs
Dial Color
Cloud
Cream

Movement

4 specs
Caliber
SW510 BH B
Unitas 6498
Type
Automatic
Manual
Power Reserve
56h
—
Jewels
27
25

Pricing

1 specs
MSRP
$2,200
$980
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