Which is bigger, the Aera Instruments M-1 or the Vortic Watch Company Springfield 173?

The Vortic Watch Company Springfield 173 wears larger at 45mm versus 39mm for the Aera Instruments M-1 — a 6mm difference across the dial.

Which has a longer power reserve, the Aera Instruments M-1 or the Vortic Watch Company Springfield 173?

The Aera Instruments M-1 carries a 42-hour power reserve against 40 hours on the Vortic Watch Company Springfield 173.

What movement does the Aera Instruments M-1 run compared to the Vortic Watch Company Springfield 173?

Both watches run manual movements — the Aera Instruments M-1 uses the Sellita SW216-1 and the Vortic Watch Company Springfield 173 uses the Illinois Watch Co..

Side by side

Aera Instruments M-1vsVortic Watch Company Springfield 173

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

Aera Instruments M-1

Vortic Watch Company Springfield 173

the-springfield-173-45mm

MSRP $4,500

At a glance

9 of 29 specs differ

Diameter

M-139mm

Springfield 17345mm

Power Reserve

M-142h

Springfield 17340h

Water Resistance

M-1100m

Springfield 173100m

MSRP

M-1—

Springfield 173$4,500

Full specifications

Case

4 specs

Crystal & Dial

2 specs

Dial Color

Dune

Black

Lume

Super-LumiNova

None

Movement

2 specs

Caliber

Sellita SW216-1

Illinois Watch Co.

Power Reserve

42h

40h

Pricing

1 specs

MSRP

—

$4,500

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