Which is bigger, the Aera Instruments M-1 or the Hamilton Khaki Field Mechanical Power Reserve?

The Hamilton Khaki Field Mechanical Power Reserve wears larger at 40mm versus 39mm for the Aera Instruments M-1 — a 1mm difference across the dial.

Which has a longer power reserve, the Aera Instruments M-1 or the Hamilton Khaki Field Mechanical Power Reserve?

The Aera Instruments M-1 carries a 42-hour power reserve against 40 hours on the Hamilton Khaki Field Mechanical Power Reserve.

What movement does the Aera Instruments M-1 run compared to the Hamilton Khaki Field Mechanical Power Reserve?

Both watches run manual movements — the Aera Instruments M-1 uses the Sellita SW216-1 and the Hamilton Khaki Field Mechanical Power Reserve uses the H-23.

Side by side

Aera Instruments M-1vsHamilton Khaki Field Mechanical Power Reserve

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

Aera Instruments M-1

Hamilton Khaki Field Mechanical Power Reserve

h69509110

MSRP $1,025

At a glance

9 of 29 specs differ

Diameter

M-139mm

Khaki Field Mechanical Power Reserve40mm

Power Reserve

M-142h

Khaki Field Mechanical Power Reserve40h

Water Resistance

M-1100m

Khaki Field Mechanical Power Reserve100m

MSRP

M-1—

Khaki Field Mechanical Power Reserve$1,025

Full specifications

Case

4 specs

Crystal & Dial

2 specs

Dial Color

Dune

White

Lume

Super-LumiNova

None

Movement

2 specs

Caliber

Sellita SW216-1

H-23

Power Reserve

42h

40h

Pricing

1 specs

MSRP

—

$1,025

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