Jaeger-LeCoultre Calibre 101. With 98 components, the miniature Calibre 101 weighs barely one gram and has been the world’s smallest mechanical movement since 1929.

Jaeger-LeCoultre Calibre 101. With 98 components, the miniature Calibre 101 weighs barely one gram and has been the world’s smallest mechanical movement since 1929.

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