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Longines HydroConquest vs Oris Divers Sixty-Five

Both are dive watches in the premium tier. In short: the Longines HydroConquest takes more water (300m) — both are fine for swimming, but it has more margin if you dive. The Longines HydroConquest is automatic, 300m water resistance, 41mm, sapphire crystal; the Oris Divers Sixty-Five is automatic, 100m water resistance, 40mm, sapphire crystal.

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

SpecLongines HydroConquestOris Divers Sixty-Five
MovementAutomaticAutomatic
Water resistance300m100m
Case size41mm40mm
Crystalsapphiresapphire
StyleDiveDive
Price tierPremiumPremium

Which should you buy?

The Longines HydroConquest takes more water (300m) — both are fine for swimming, but it has more margin if you dive.

Where to buy

Longines HydroConquestSee price on AmazonCheck price

Oris Divers Sixty-FiveSee price on AmazonCheck price

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FAQ

What's the difference between the Longines HydroConquest and the Oris Divers Sixty-Five?
Both are dive watches in the premium tier. The Longines HydroConquest is automatic, 300m water resistance, 41mm, sapphire crystal; the Oris Divers Sixty-Five is automatic, 100m water resistance, 40mm, sapphire crystal.

Which has better water resistance, the Longines HydroConquest or the Oris Divers Sixty-Five?
The Longines HydroConquest, rated 300m, versus 100m on the other. Pick 100m or higher for swimming and 200m+ for diving.

Which is better value, the Longines HydroConquest or the Oris Divers Sixty-Five?
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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