Which is cheaper, the Hamilton Khaki Aviation Takeoff Auto Chrono or the Hemel HFC Mechanical Chronograph?

At MSRP the Hemel HFC Mechanical Chronograph is the cheaper of the two at $550, against $3,575 for the Hamilton Khaki Aviation Takeoff Auto Chrono — a $3,025 gap before any retailer discounting.

Which is bigger, the Hamilton Khaki Aviation Takeoff Auto Chrono or the Hemel HFC Mechanical Chronograph?

The Hamilton Khaki Aviation Takeoff Auto Chrono wears larger at 46mm versus 40mm for the Hemel HFC Mechanical Chronograph — a 6mm difference across the dial.

Which has better water resistance, the Hamilton Khaki Aviation Takeoff Auto Chrono or the Hemel HFC Mechanical Chronograph?

The Hemel HFC Mechanical Chronograph is rated to 100m versus 50m for the Hamilton Khaki Aviation Takeoff Auto Chrono.

Which has a longer power reserve, the Hamilton Khaki Aviation Takeoff Auto Chrono or the Hemel HFC Mechanical Chronograph?

The Hamilton Khaki Aviation Takeoff Auto Chrono carries a 60-hour power reserve against 40 hours on the Hemel HFC Mechanical Chronograph.

What movement does the Hamilton Khaki Aviation Takeoff Auto Chrono run compared to the Hemel HFC Mechanical Chronograph?

The Hamilton Khaki Aviation Takeoff Auto Chrono runs a automatic caliber (H-31), while the Hemel HFC Mechanical Chronograph runs a manual (Seagull ST19).

Side by side

Hamilton Khaki Aviation Takeoff Auto ChronovsHemel HFC Mechanical Chronograph

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

Hamilton Khaki Aviation Takeoff Auto Chrono

h76786733

MSRP $3,575

Hemel HFC Mechanical Chronograph

the-airfoil

MSRP $550

At a glance

13 of 29 specs differ

Diameter

Khaki Aviation Takeoff Auto Chrono46mm

HFC Mechanical Chronograph40mm

Power Reserve

Khaki Aviation Takeoff Auto Chrono60h

HFC Mechanical Chronograph40h

Water Resistance

Khaki Aviation Takeoff Auto Chrono50m

HFC Mechanical Chronograph100m

MSRP

Khaki Aviation Takeoff Auto Chrono$3,575

HFC Mechanical Chronograph$550

Full specifications

Case

7 specs

Crystal & Dial

2 specs

Crystal

Sapphire

Domed Sapphire

Dial Color

Black

Airfoil (1970s British Pilot)

Movement

3 specs

Caliber

H-31

Seagull ST19

Type

Automatic

Manual

Power Reserve

60h

40h

Pricing

1 specs

MSRP

$3,575

$550

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