JLC 909

Calibre 909 is an automatic alarm movement from Jaeger-LeCoultre.

Introduced in 2005, Calibre 909 was used in the Master Grand Réveil, a limited-edition watch. Special features included a perpetual calendar, 24 hour function, and switchable alarm on a bronze gong or just vibration.

Specifications

• 30 mm diameter, 8.3 mm thick
• 28,800 A/h
• Glucydur balance, automatically compensating hairspring
• Double barrel (time and alarm)
  • Bidirectional automatic winding for time
  • Manual winding for alarm
• 36 jewels
• Alarm hammer on bronze gong or vibration
• Power reserve of 45 hours
• 349 components