Which is bigger, the Aera Instruments M-1 or the Hamilton Khaki Aviation Pilot Pioneer Mechanical Chrono?

The Hamilton Khaki Aviation Pilot Pioneer Mechanical Chrono 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 Aviation Pilot Pioneer Mechanical Chrono?

The Hamilton Khaki Aviation Pilot Pioneer Mechanical Chrono carries a 60-hour power reserve against 42 hours on the Aera Instruments M-1.

What movement does the Aera Instruments M-1 run compared to the Hamilton Khaki Aviation Pilot Pioneer Mechanical Chrono?

Both watches run manual movements — the Aera Instruments M-1 uses the Sellita SW216-1 and the Hamilton Khaki Aviation Pilot Pioneer Mechanical Chrono uses the H-51-Si.

Side by side

Aera Instruments M-1vsHamilton Khaki Aviation Pilot Pioneer Mechanical Chrono

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

Aera Instruments M-1

Hamilton Khaki Aviation Pilot Pioneer Mechanical Chrono

h76409140

MSRP $2,445

At a glance

10 of 29 specs differ

Diameter

M-139mm

Khaki Aviation Pilot Pioneer Mechanical Chrono40mm

Power Reserve

M-142h

Khaki Aviation Pilot Pioneer Mechanical Chrono60h

Water Resistance

M-1100m

Khaki Aviation Pilot Pioneer Mechanical Chrono100m

MSRP

M-1—

Khaki Aviation Pilot Pioneer Mechanical Chrono$2,445

Full specifications

Case

5 specs

Crystal & Dial

2 specs

Dial Color

Dune

Blue

Lume

Super-LumiNova

None

Movement

2 specs

Caliber

Sellita SW216-1

H-51-Si

Power Reserve

42h

60h

Pricing

1 specs

MSRP

—

$2,445

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