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Omega Seamaster Diver 300M vs Rolex Submariner

Both are dive watches in the premium tier. In short: the Omega Seamaster Diver 300M wears 42mm vs the Rolex Submariner's 41mm — choose by wrist size. The Omega Seamaster Diver 300M is automatic, 300m water resistance, 42mm, sapphire crystal; the Rolex Submariner is automatic, 300m water resistance, 41mm, sapphire crystal.

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

SpecOmega Seamaster Diver 300MRolex Submariner
MovementAutomaticAutomatic
Water resistance300m300m
Case size42mm41mm
Crystalsapphiresapphire
StyleDiveDive
Price tierPremiumPremium

Which should you buy?

The Omega Seamaster Diver 300M wears 42mm vs the Rolex Submariner's 41mm — choose by wrist size.

Where to buy

Omega Seamaster Diver 300MSee price on AmazonCheck price

Rolex SubmarinerSee price on AmazonCheck price

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FAQ

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

Which is better value, the Omega Seamaster Diver 300M or the Rolex Submariner?
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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