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Longines HydroConquest vs Tudor Black Bay 58

Both are dive watches in the premium tier — here's how the specs differ and which to pick.

Last verified 2026-06-11 · specs from manufacturer data · tier = price band, confirm the live price at the retailer

SpecLongines HydroConquestTudor Black Bay 58
MovementAutomaticAutomatic
Water resistance300m200m
Case size41mm39mm
Crystalsapphiresapphire
StyleDiveDive
Price tierPremiumPremium

Which should you buy?

Where to buy

Check the Longines HydroConquest price on Amazon →

Check the Tudor Black Bay 58 price on Amazon →

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FAQ

What's the difference between the Longines HydroConquest and the Tudor Black Bay 58?
Both are dive watches in the premium tier. The Longines HydroConquest is automatic, 300m water resistance, 41mm, sapphire crystal; the Tudor Black Bay 58 is automatic, 200m water resistance, 39mm, sapphire crystal.

Which has better water resistance, the Longines HydroConquest or the Tudor Black Bay 58?
The Longines HydroConquest, rated 300m, versus 200m on the other. Pick 100m or higher for swimming and 200m+ for diving.

Which is better value, the Longines HydroConquest or the Tudor Black Bay 58?
Both sit in the premium tier, so it comes down to movement, water resistance and case size — see the spec table above.

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