Which is bigger, the Aera Instruments M-1 or the Cincinnati Watch Company Ladies Union Terminal Watch?

The Aera Instruments M-1 wears larger at 39mm versus 26.5mm for the Cincinnati Watch Company Ladies Union Terminal Watch — a 12.5mm difference across the dial.

Which has better water resistance, the Aera Instruments M-1 or the Cincinnati Watch Company Ladies Union Terminal Watch?

The Aera Instruments M-1 is rated to 100m versus 30m for the Cincinnati Watch Company Ladies Union Terminal Watch.

What movement does the Aera Instruments M-1 run compared to the Cincinnati Watch Company Ladies Union Terminal Watch?

The Aera Instruments M-1 runs a manual caliber (Sellita SW216-1), while the Cincinnati Watch Company Ladies Union Terminal Watch runs a quartz (Ronda 502).

Side by side

Aera Instruments M-1vsCincinnati Watch Company Ladies Union Terminal Watch

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

Aera Instruments M-1

Cincinnati Watch Company Ladies Union Terminal Watch

ladies-union-terminal-watch

MSRP $325

At a glance

20 of 29 specs differ

Diameter

M-139mm

Ladies Union Terminal Watch26.5mm

Power Reserve

M-142h

Ladies Union Terminal Watch—

Water Resistance

M-1100m

Ladies Union Terminal Watch30m

MSRP

M-1—

Ladies Union Terminal Watch$325

Full specifications

Case

9 specs

Crystal & Dial

5 specs

Crystal Shape

Flat

—

AR Coating

Inner

—

Dial Color

Dune

Silver

Indices

Applied

—

Lume

Super-LumiNova

None

Movement

5 specs

Caliber

Sellita SW216-1

Ronda 502

Type

Manual

Quartz

Beat Rate

28,800 vph

0 vph

Power Reserve

42h

Jewels

Pricing

1 specs

MSRP

—

$325

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