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

At MSRP the Hemel Sky Racer Mechanical is the cheaper of the two at $550, against $2,095 for the Hamilton Khaki Aviation X-Wind Auto chrono — a $1,545 gap before any retailer discounting.

Which is bigger, the Hamilton Khaki Aviation X-Wind Auto chrono or the Hemel Sky Racer Mechanical?

The Hamilton Khaki Aviation X-Wind Auto chrono wears larger at 44mm versus 43mm for the Hemel Sky Racer Mechanical — a 1mm difference across the dial.

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

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

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

The Hamilton Khaki Aviation X-Wind Auto chrono carries a 60-hour power reserve against 40 hours on the Hemel Sky Racer Mechanical.

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

The Hamilton Khaki Aviation X-Wind Auto chrono runs a automatic caliber (H-21), while the Hemel Sky Racer Mechanical runs a manual (Seagull ST19).

Side by side

Hamilton Khaki Aviation X-Wind Auto chronovsHemel Sky Racer Mechanical

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

Hamilton Khaki Aviation X-Wind Auto chrono

h77506540

MSRP $2,095

Hemel Sky Racer Mechanical

HF37MNB

MSRP $550

At a glance

13 of 29 specs differ

Diameter

Khaki Aviation X-Wind Auto chrono44mm

Sky Racer Mechanical43mm

Power Reserve

Khaki Aviation X-Wind Auto chrono60h

Sky Racer Mechanical40h

Water Resistance

Khaki Aviation X-Wind Auto chrono100m

Sky Racer Mechanical50m

MSRP

Khaki Aviation X-Wind Auto chrono$2,095

Sky Racer Mechanical$550

Full specifications

Case

7 specs

Crystal & Dial

2 specs

Crystal

Sapphire

Domed Sapphire

Dial Color

Blue

Black

Movement

3 specs

Caliber

H-21

Seagull ST19

Type

Automatic

Manual

Power Reserve

60h

40h

Pricing

1 specs

MSRP

$2,095

$550

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