Seiko 5 Sport SRPD vs Citizen Tsuyosa NJ0150

Both are everyday watches in the mid tier. In short: the Seiko 5 Sport SRPD takes more water (100m) — the one to pick if you swim. The Seiko 5 Sport SRPD is automatic, 100m water resistance, 42.5mm, hardlex crystal; the Citizen Tsuyosa NJ0150 is automatic, 50m water resistance, 40mm, mineral crystal.

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

Spec	Seiko 5 Sport SRPD	Citizen Tsuyosa NJ0150
Movement	Automatic	Automatic
Water resistance	100m	50m
Case size	42.5mm	40mm
Crystal	hardlex	mineral
Style	Everyday / casual	Everyday / casual
Price tier	Mid	Mid

Which should you buy?

The Seiko 5 Sport SRPD takes more water (100m) — the one to pick if you swim
The Seiko 5 Sport SRPD wears 42.5mm vs the Citizen Tsuyosa NJ0150's 40mm — choose by wrist size

Where to buy

Seiko 5 Sport SRPDSee price on AmazonCheck price

Citizen Tsuyosa NJ0150See price on AmazonCheck price

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FAQ

What's the difference between the Seiko 5 Sport SRPD and the Citizen Tsuyosa NJ0150?
Both are everyday watches in the mid tier. The Seiko 5 Sport SRPD is automatic, 100m water resistance, 42.5mm, hardlex crystal; the Citizen Tsuyosa NJ0150 is automatic, 50m water resistance, 40mm, mineral crystal.

Which has better water resistance, the Seiko 5 Sport SRPD or the Citizen Tsuyosa NJ0150?
The Seiko 5 Sport SRPD, rated 100m, versus 50m on the other. Pick 100m or higher for swimming and 200m+ for diving.

Which is better value, the Seiko 5 Sport SRPD or the Citizen Tsuyosa NJ0150?
Both sit in the mid 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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