Which is cheaper, the Hamilton Khaki Aviation Air Race Auto or the MKII Project 300?

At MSRP the Hamilton Khaki Aviation Air Race Auto is the cheaper of the two at $845, against $1,995 for the MKII Project 300 — a $1,150 gap before any retailer discounting.

Which is bigger, the Hamilton Khaki Aviation Air Race Auto or the MKII Project 300?

The MKII Project 300 wears larger at 41.25mm versus 38mm for the Hamilton Khaki Aviation Air Race Auto — a 3.3mm difference across the dial.

Which has better water resistance, the Hamilton Khaki Aviation Air Race Auto or the MKII Project 300?

The MKII Project 300 is rated to 300m versus 50m for the Hamilton Khaki Aviation Air Race Auto.

What movement does the Hamilton Khaki Aviation Air Race Auto run compared to the MKII Project 300?

Both watches run automatic movements — the Hamilton Khaki Aviation Air Race Auto uses the H-10 and the MKII Project 300 uses the ETA 2824-2.

Side by side

Hamilton Khaki Aviation Air Race AutovsMKII Project 300

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

Add a watch

Hamilton Khaki Aviation Air Race Auto

h76235731

MSRP $845

MKII Project 300

project-300-big-t-date-100

MSRP $1,995

At a glance

10 of 29 specs differ

Diameter

Khaki Aviation Air Race Auto38mm

Project 30041.25mm

Power Reserve

Khaki Aviation Air Race Auto80h

Project 300—

Water Resistance

Khaki Aviation Air Race Auto50m

Project 300300m

MSRP

Khaki Aviation Air Race Auto$845

Project 300$1,995

Full specifications

Case

6 specs

Crystal & Dial

1 specs

Dial Color

Black

—

Movement

2 specs

Caliber

H-10

ETA 2824-2

Power Reserve

80h

—

Pricing

1 specs

MSRP

$845

$1,995

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Drydenmicro

Follow this matchup

Get a note when Hamilton Khaki Aviation Air Race Auto vs MKII Project 300 gets more votes, a community discussion, or a price drop. No account needed.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.

Dryden Heartlander SolarvsMKII Project 300 Bremont Altitude 39 DatevsMKII Project 300 Bremont Terra Nova 38vsMKII Project 300 MKII Project 300vsVario 1945 D12 Bronze Fumé Hamilton Khaki Aviation Air Race AutovsMagrette Kaitiaki Hamilton Khaki Aviation Air Race AutovsPook Watches Ilmari40

Edit this comparison Add another watch Explore more 37–43mm watches

Hamilton Khaki Aviation Air Race AutovsMKII Project 300

At a glance

Full specifications

More watches worth a look

Heartlander Solar

Kaitiaki

Altitude 39 Date

Ilmari40

Terra Nova 38

1980 RN Divers Automatic Re-Issue Watch

1945 D12 Bronze Fumé

Mechanic Ocean Mark II

Follow this matchup

People also compared