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JLC 978

The JLC 978 is a tourbillon watch movement from Jaeger-LeCoultre.

The 978 (and derivative 978B) is an automatic movement made up of 302 pieces. It runs at 28,800 vph, has 33 jewels, and a power reserve of 48 hours.

Jaeger-LeCoultre currently uses this calibre in 11 watches, making it their most-common by number of watches but the high cost and component count make it one of their least-produced calibres. The 978 measures 7.05 mm high, while the 978B is 7.10 mm high as it adds a dual timezone function.

Applications

The 978 is used in the following watches

Description:

Functions:

  • -

Data:

  • H 7.05 mm
  • 33 jewels
  • 28,800 A/h
  • Power reserve 48 Hours

Production period:

  • Current
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