Seiko 5 SNK809 vs Orient Defender

Both are field watches in the entry tier. In short: the Orient Defender takes more water (100m) — the one to pick if you swim. The Seiko 5 SNK809 is automatic, 30m water resistance, 37mm, hardlex crystal; the Orient Defender is automatic, 100m water resistance, 42mm, mineral crystal.

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

Spec	Seiko 5 SNK809	Orient Defender
Movement	Automatic	Automatic
Water resistance	30m	100m
Case size	37mm	42mm
Crystal	hardlex	mineral
Style	Field / explorer	Field / explorer
Price tier	Entry	Entry

Which should you buy?

The Orient Defender takes more water (100m) — the one to pick if you swim
The Seiko 5 SNK809 wears 37mm vs the Orient Defender's 42mm — choose by wrist size

Where to buy

Seiko 5 SNK809See price on AmazonCheck price

Orient DefenderSee price on AmazonCheck price

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FAQ

What's the difference between the Seiko 5 SNK809 and the Orient Defender?
Both are field watches in the entry tier. The Seiko 5 SNK809 is automatic, 30m water resistance, 37mm, hardlex crystal; the Orient Defender is automatic, 100m water resistance, 42mm, mineral crystal.

Which has better water resistance, the Seiko 5 SNK809 or the Orient Defender?
The Orient Defender, rated 100m, versus 30m on the other. Pick 100m or higher for swimming and 200m+ for diving.

Which is better value, the Seiko 5 SNK809 or the Orient Defender?
Both sit in the entry tier, so it comes down to movement, water resistance and case size — see the spec table above.

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

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