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Oris Aquis Date vs Sinn U1

Both are dive watches in the premium tier. In short: the Oris Aquis Date wears 41.5mm vs the Sinn U1's 44mm — choose by wrist size. The Oris Aquis Date is automatic, 300m water resistance, 41.5mm, sapphire crystal; the Sinn U1 is automatic, 300m water resistance, 44mm, sapphire crystal.

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

SpecOris Aquis DateSinn U1
MovementAutomaticAutomatic
Water resistance300m300m
Case size41.5mm44mm
Crystalsapphiresapphire
StyleDiveDive
Price tierPremiumPremium

Which should you buy?

The Oris Aquis Date wears 41.5mm vs the Sinn U1's 44mm — choose by wrist size.

Where to buy

Oris Aquis DateSee price on AmazonCheck price

Sinn U1See price on AmazonCheck price

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FAQ

What's the difference between the Oris Aquis Date and the Sinn U1?
Both are dive watches in the premium tier. The Oris Aquis Date is automatic, 300m water resistance, 41.5mm, sapphire crystal; the Sinn U1 is automatic, 300m water resistance, 44mm, sapphire crystal.

Which is better value, the Oris Aquis Date or the Sinn U1?
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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