Which is cheaper, the Hamilton Khaki Aviation X-Wind Day Date Auto or the Hemel HFC Mechanical Chronograph?

At MSRP the Hemel HFC Mechanical Chronograph is the cheaper of the two at $550, against $1,375 for the Hamilton Khaki Aviation X-Wind Day Date Auto — a $825 gap before any retailer discounting.

Which is bigger, the Hamilton Khaki Aviation X-Wind Day Date Auto or the Hemel HFC Mechanical Chronograph?

The Hamilton Khaki Aviation X-Wind Day Date Auto wears larger at 45mm versus 40mm for the Hemel HFC Mechanical Chronograph — a 5mm difference across the dial.

Which has a longer power reserve, the Hamilton Khaki Aviation X-Wind Day Date Auto or the Hemel HFC Mechanical Chronograph?

The Hamilton Khaki Aviation X-Wind Day Date Auto carries a 80-hour power reserve against 40 hours on the Hemel HFC Mechanical Chronograph.

What movement does the Hamilton Khaki Aviation X-Wind Day Date Auto run compared to the Hemel HFC Mechanical Chronograph?

The Hamilton Khaki Aviation X-Wind Day Date Auto runs a automatic caliber (H-30), while the Hemel HFC Mechanical Chronograph runs a manual (Seagull ST19).

Side by side

Hamilton Khaki Aviation X-Wind Day Date AutovsHemel HFC Mechanical Chronograph

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

Hamilton Khaki Aviation X-Wind Day Date Auto

h77735560

MSRP $1,375

Hemel HFC Mechanical Chronograph

the-airfoil

MSRP $550

At a glance

12 of 29 specs differ

Diameter

Khaki Aviation X-Wind Day Date Auto45mm

HFC Mechanical Chronograph40mm

Power Reserve

Khaki Aviation X-Wind Day Date Auto80h

HFC Mechanical Chronograph40h

Water Resistance

Khaki Aviation X-Wind Day Date Auto100m

HFC Mechanical Chronograph100m

MSRP

Khaki Aviation X-Wind Day Date Auto$1,375

HFC Mechanical Chronograph$550

Full specifications

Case

6 specs

Crystal & Dial

2 specs

Crystal

Sapphire

Domed Sapphire

Dial Color

Green

Airfoil (1970s British Pilot)

Movement

3 specs

Caliber

H-30

Seagull ST19

Type

Automatic

Manual

Power Reserve

80h

40h

Pricing

1 specs

MSRP

$1,375

$550

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