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Monta Oceanking vs Omega Seamaster Diver 300M

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

SpecMonta OceankingOmega Seamaster Diver 300M
MovementAutomaticAutomatic
Water resistance300m300m
Case size41mm42mm
Crystalsapphiresapphire
StyleDiveDive
Price tierPremiumPremium

Which should you buy?

Where to buy

Check the Monta Oceanking price on Amazon →

Check the Omega Seamaster Diver 300M price on Amazon →

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FAQ

What's the difference between the Monta Oceanking and the Omega Seamaster Diver 300M?
Both are dive watches in the premium tier. The Monta Oceanking is automatic, 300m water resistance, 41mm, sapphire crystal; the Omega Seamaster Diver 300M is automatic, 300m water resistance, 42mm, sapphire crystal.

Which is better value, the Monta Oceanking or the Omega Seamaster Diver 300M?
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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