Uploaded July 2025 | Updated September 2026, 11 minutes ago

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Recognised as the world’s smallest mechanical movement, the Calibre 101 measures just 14 x 4.8 mm with a thickness of 3.4 mm. Composed of 98 components, each is meticulously hand-assembled by a select few watchmakers at the Manufacture. Developed in 1929 to ensure exceptional precision within an ultra-compact form, it has been kept in continuous production, embodying Jaeger-LeCoultre’s mastery of micro-mechanical engineering.

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