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

At MSRP the Hemel Sky Racer Mechanical 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 Sky Racer Mechanical?

The Hamilton Khaki Aviation X-Wind Day Date Auto wears larger at 45mm versus 43mm for the Hemel Sky Racer Mechanical — a 2mm difference across the dial.

Which has better water resistance, the Hamilton Khaki Aviation X-Wind Day Date Auto or the Hemel Sky Racer Mechanical?

The Hamilton Khaki Aviation X-Wind Day Date Auto is rated to 100m versus 50m for the Hemel Sky Racer Mechanical.

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

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

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

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

Side by side

Hamilton Khaki Aviation X-Wind Day Date AutovsHemel Sky Racer Mechanical

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 Sky Racer Mechanical

HF37MNB

MSRP $550

At a glance

13 of 29 specs differ

Diameter

Khaki Aviation X-Wind Day Date Auto45mm

Sky Racer Mechanical43mm

Power Reserve

Khaki Aviation X-Wind Day Date Auto80h

Sky Racer Mechanical40h

Water Resistance

Khaki Aviation X-Wind Day Date Auto100m

Sky Racer Mechanical50m

MSRP

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

Sky Racer Mechanical$550

Full specifications

Case

7 specs

Crystal & Dial

2 specs

Crystal

Sapphire

Domed Sapphire

Dial Color

Green

Black

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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