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Jaeger-LeCoultre Master Ultra Thin Power Reserve

Jaeger-LeCoultre Master Ultra Thin Power Reserve

AutomaticSteel

Ref. Q1378480

Collection: Master Ultra ThinMovement: 938

The Jaeger-LeCoultre Master Ultra Thin Power Reserve, reference Q1378480, carries a power reserve display and pointer-type date within a steel case. The self-winding calibre 938 operates at 4 Hz, equivalent to 28800 vibrations per hour, and provides a 43-hour power reserve. The calibre is assembled from 273 components, with 41 jewels and one barrel.

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Last updated 13 Oct 2026Suggest a correction

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