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Sinn 104 vs IWC Pilot's Watch Mark XVIII

Both are pilot / aviation watches — 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

SpecSinn 104IWC Pilot's Watch Mark XVIII
MovementAutomaticAutomatic
Water resistance200m50m
Case size41mm40mm
Crystalsapphiresapphire
StylePilot / aviationPilot / aviation
Price tierUpperPremium

Which should you buy?

Where to buy

Check the Sinn 104 price on Amazon →

Check the IWC Pilot's Watch Mark XVIII price on Amazon →

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FAQ

What's the difference between the Sinn 104 and the IWC Pilot's Watch Mark XVIII?
Both are pilot / aviation watches. The Sinn 104 is automatic, 200m water resistance, 41mm, sapphire crystal; the IWC Pilot's Watch Mark XVIII is automatic, 50m water resistance, 40mm, sapphire crystal.

Which has better water resistance, the Sinn 104 or the IWC Pilot's Watch Mark XVIII?
The Sinn 104, rated 200m, versus 50m on the other. Pick 100m or higher for swimming and 200m+ for diving.

Which is better value, the Sinn 104 or the IWC Pilot's Watch Mark XVIII?
The Sinn 104 is the lower-priced tier; the other steps up in build for more money — confirm both live prices at the retailer.

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