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:

• Jaeger-LeCoultre Master Tourbillon
• Jaeger-LeCoultre Master Grand Tourbillon
• Jaeger-LeCoultre Master Date Tourbillon 39
• Jaeger-LeCoultre Master Grand Tourbillon
• Jaeger-LeCoultre Master Grand Tourbillon set
• Jaeger-LeCoultre Master Grande Tradition à Tourbillon 43
• Jaeger-LeCoultre Master Compressor Extreme Tourbillon
• Jaeger-LeCoultre Rendez-Vous Tourbillon
• Jaeger-LeCoultre Rendez-Vous Tourbillon Enamel
• Jaeger-LeCoultre Rendez-Vous Tourbillon Night & Day
• Jaeger-LeCoultre Rendez-Vous Tourbillon Wild
• Jaeger-LeCoultre Master Tourbillon Dualtime (JLC 978B)

External Links

• Setting Standards

Manufacturer: Jaeger-LeCoultre Description: Automatic movement 302 components Functions: - Data: H 7.05 mm 33 jewels 28,800 A/h Power reserve 48 Hours Production period: Current