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Hamilton Khaki Field Auto vs Seiko 5 Sports Field SRPG35

Both are field / explorer watches — here's how the specs differ and which to pick.

Last verified 2026-06-27 · specs from manufacturer data · tier = price band, confirm the live price at the retailer

SpecHamilton Khaki Field AutoSeiko 5 Sports Field SRPG35
MovementAutomaticAutomatic
Water resistance100m100m
Case size42mm39.4mm
Crystalsapphirehardlex
StyleField / explorerField / explorer
Price tierUpperMid

Which should you buy?

Where to buy

Check the Hamilton Khaki Field Auto price on Amazon →

Check the Seiko 5 Sports Field SRPG35 price on Amazon →

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FAQ

What's the difference between the Hamilton Khaki Field Auto and the Seiko 5 Sports Field SRPG35?
Both are field / explorer watches. The Hamilton Khaki Field Auto is automatic, 100m water resistance, 42mm, sapphire crystal; the Seiko 5 Sports Field SRPG35 is automatic, 100m water resistance, 39.4mm, hardlex crystal.

Which is better value, the Hamilton Khaki Field Auto or the Seiko 5 Sports Field SRPG35?
The Seiko 5 Sports Field SRPG35 is the lower-priced tier; the other steps up in build for more money — confirm both live prices at the retailer.

Citing these specs? Go ahead — manufacturer data, last verified 2026-06-27. Copy a ready-made reference:

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