Which is cheaper, the Hamilton Khaki Aviation 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 $1,125 for the Hamilton Khaki Aviation Day Date Auto — a $575 gap before any retailer discounting.

Which is bigger, the Hamilton Khaki Aviation Day Date Auto or the Hemel Sky Racer Mechanical?

The Hemel Sky Racer Mechanical wears larger at 43mm versus 42mm for the Hamilton Khaki Aviation Day Date Auto — a 1mm difference across the dial.

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

The Hamilton Khaki Aviation 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 Day Date Auto or the Hemel Sky Racer Mechanical?

The Hamilton Khaki Aviation 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 Day Date Auto run compared to the Hemel Sky Racer Mechanical?

The Hamilton Khaki Aviation Day Date Auto runs a automatic caliber (H-40), while the Hemel Sky Racer Mechanical runs a manual (Seagull ST19).

Side by side

Hamilton Khaki Aviation 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 Day Date Auto

h64645131

MSRP $1,125

Hemel Sky Racer Mechanical

HF37MNB

MSRP $550

At a glance

11 of 29 specs differ

Diameter

Khaki Aviation Day Date Auto42mm

Sky Racer Mechanical43mm

Power Reserve

Khaki Aviation Day Date Auto80h

Sky Racer Mechanical40h

Water Resistance

Khaki Aviation Day Date Auto100m

Sky Racer Mechanical50m

MSRP

Khaki Aviation Day Date Auto$1,125

Sky Racer Mechanical$550

Full specifications

Case

6 specs

Crystal & Dial

1 specs

Crystal

Sapphire

Domed Sapphire

Movement

3 specs

Caliber

H-40

Seagull ST19

Type

Automatic

Manual

Power Reserve

80h

40h

Pricing

1 specs

MSRP

$1,125

$550

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