WHICH WATCH FITS

Zenith DEFY Skyline Tourbillon Skeleton

Zenith · DEFY Skyline

Zenith DEFY Skyline Tourbillon Skeleton

Zenith DEFY Skyline Tourbillon Skeleton (reference 18.9300.3630/78.I001) — specifications, measurements, watch images and standardized wrist-fit previews for informed comparison.

Zenith DEFY Skyline Tourbillon Skeleton: 41 mm, skeleton / tourbillon, automatic, 100 m water resistance.

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Best forUsers comparing current Zenith models and 2026 releases.
Not ideal forUsers requiring live street-price or dealer-stock confirmation.
Wearsmedium

At a glance

Reference18.9300.3630/78.I001
CollectionDEFY Skyline
Model lineDEFY Skyline
Production statusCurrent
Production period2026–present
Official size41
Watch technology InfoMechanical
DisplayAnalog
Movement InfoAutomatic
Calibre / operating system InfoEl Primero 3630 SK
Key features InfoTourbillon
Complication InfoTourbillon
Case diameter Info41 mm
Power reserve / runtime50 hours
Water resistance100 m
OriginSwitzerland
Recommended wrist Info14–20 cm
Price categoryHigh luxury

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Specifications last verified: 2026-08-11.

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