Which is cheaper, the Hamilton Khaki Aviation Air Race Auto or the Helgray Poseidon Diver (Automatic)?

At MSRP the Helgray Poseidon Diver (Automatic) is the cheaper of the two at $249, against $845 for the Hamilton Khaki Aviation Air Race Auto — a $596 gap before any retailer discounting.

Which is bigger, the Hamilton Khaki Aviation Air Race Auto or the Helgray Poseidon Diver (Automatic)?

The Helgray Poseidon Diver (Automatic) wears larger at 40mm versus 38mm for the Hamilton Khaki Aviation Air Race Auto — a 2mm difference across the dial.

Which has better water resistance, the Hamilton Khaki Aviation Air Race Auto or the Helgray Poseidon Diver (Automatic)?

The Helgray Poseidon Diver (Automatic) is rated to 300m versus 50m for the Hamilton Khaki Aviation Air Race Auto.

Which has a longer power reserve, the Hamilton Khaki Aviation Air Race Auto or the Helgray Poseidon Diver (Automatic)?

The Hamilton Khaki Aviation Air Race Auto carries a 80-hour power reserve against 40 hours on the Helgray Poseidon Diver (Automatic).

What movement does the Hamilton Khaki Aviation Air Race Auto run compared to the Helgray Poseidon Diver (Automatic)?

Both watches run automatic movements — the Hamilton Khaki Aviation Air Race Auto uses the H-10 and the Helgray Poseidon Diver (Automatic) uses the NH35 Warranty.

Side by side

Hamilton Khaki Aviation Air Race AutovsHelgray Poseidon Diver (Automatic)

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

Hamilton Khaki Aviation Air Race Auto

h76235731

MSRP $845

Helgray Poseidon Diver (Automatic)

poseidon-diver-automatic

MSRP $249

At a glance

8 of 29 specs differ

Diameter

Khaki Aviation Air Race Auto38mm

Poseidon Diver (Automatic)40mm

Power Reserve

Khaki Aviation Air Race Auto80h

Poseidon Diver (Automatic)40h

Water Resistance

Khaki Aviation Air Race Auto50m

Poseidon Diver (Automatic)300m

MSRP

Khaki Aviation Air Race Auto$845

Poseidon Diver (Automatic)$249

Full specifications

Case

5 specs

Movement

2 specs

Caliber

H-10

NH35 Warranty

Power Reserve

80h

40h

Pricing

1 specs

MSRP

$845

$249

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