Which is bigger, the Aera Instruments M-1 or the Marathon Steel Navigator SSNAV Quartz?

The Marathon Steel Navigator SSNAV Quartz wears larger at 41mm versus 39mm for the Aera Instruments M-1 — a 2mm difference across the dial.

Which has better water resistance, the Aera Instruments M-1 or the Marathon Steel Navigator SSNAV Quartz?

The Aera Instruments M-1 is rated to 100m versus 60m for the Marathon Steel Navigator SSNAV Quartz.

Which has a longer power reserve, the Aera Instruments M-1 or the Marathon Steel Navigator SSNAV Quartz?

The Aera Instruments M-1 carries a 42-hour power reserve against 40 hours on the Marathon Steel Navigator SSNAV Quartz.

What movement does the Aera Instruments M-1 run compared to the Marathon Steel Navigator SSNAV Quartz?

The Aera Instruments M-1 runs a manual caliber (Sellita SW216-1), while the Marathon Steel Navigator SSNAV Quartz runs a quartz (Swiss High-Torque Quartz).

Side by side

Aera Instruments M-1vsMarathon Steel Navigator SSNAV Quartz

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

Aera Instruments M-1

Marathon Steel Navigator SSNAV Quartz

41mm-steel-navigator-ssnav-on-ballistic-nylon

MSRP $1,000

At a glance

12 of 29 specs differ

Diameter

M-139mm

Steel Navigator SSNAV Quartz41mm

Power Reserve

M-142h

Steel Navigator SSNAV Quartz40h

Water Resistance

M-1100m

Steel Navigator SSNAV Quartz60m

MSRP

M-1—

Steel Navigator SSNAV Quartz$1,000

Full specifications

Case

6 specs

Crystal & Dial

2 specs

Dial Color

Dune

Black

Lume

Super-LumiNova

None

Movement

3 specs

Caliber

Sellita SW216-1

Swiss High-Torque Quartz

Type

Manual

Quartz

Power Reserve

42h

40h

Pricing

1 specs

MSRP

—

$1,000

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