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Longines HydroConquest vs Tudor Pelagos

Both are dive watches in the premium tier. In short: the Longines HydroConquest wears 41mm vs the Tudor Pelagos's 42mm — choose by wrist size. The Longines HydroConquest is automatic, 300m water resistance, 41mm, sapphire crystal; the Tudor Pelagos is automatic, 300m water resistance, 42mm, sapphire crystal.

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

SpecLongines HydroConquestTudor Pelagos
MovementAutomaticAutomatic
Water resistance300m300m
Case size41mm42mm
Crystalsapphiresapphire
StyleDiveDive
Price tierPremiumPremium

Which should you buy?

The Longines HydroConquest wears 41mm vs the Tudor Pelagos's 42mm — choose by wrist size.

Where to buy

Longines HydroConquestSee price on AmazonCheck price

Tudor PelagosSee price on AmazonCheck price

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FAQ

What's the difference between the Longines HydroConquest and the Tudor Pelagos?
Both are dive watches in the premium tier. The Longines HydroConquest is automatic, 300m water resistance, 41mm, sapphire crystal; the Tudor Pelagos is automatic, 300m water resistance, 42mm, sapphire crystal.

Which is better value, the Longines HydroConquest or the Tudor Pelagos?
Both sit in the premium 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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