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Sinn U1 vs Rolex Submariner

Both are dive watches in the premium tier. In short: the Sinn U1 wears 44mm vs the Rolex Submariner's 41mm — choose by wrist size. The Sinn U1 is automatic, 300m water resistance, 44mm, 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

SpecSinn U1Rolex Submariner
MovementAutomaticAutomatic
Water resistance300m300m
Case size44mm41mm
Crystalsapphiresapphire
StyleDiveDive
Price tierPremiumPremium

Which should you buy?

The Sinn U1 wears 44mm vs the Rolex Submariner's 41mm — choose by wrist size.

Where to buy

Sinn U1See price on AmazonCheck price

Rolex SubmarinerSee price on AmazonCheck price

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FAQ

What's the difference between the Sinn U1 and the Rolex Submariner?
Both are dive watches in the premium tier. The Sinn U1 is automatic, 300m water resistance, 44mm, sapphire crystal; the Rolex Submariner is automatic, 300m water resistance, 41mm, sapphire crystal.

Which is better value, the Sinn U1 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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