JLC 918

Calibre 918 was an automatic alarm movement from Jaeger-LeCoultre.

Introduced in 1994, Calibre 918 replaced Calibres 916 in the Jaeger-LeCoultre Memovox range. This calibre was replaced by Calibre 956 in 2008.

Calibre 918 was very similar to its predecessor.

Specifications

7.45 mm thick
28,800 A/h
Double barrel (time and alarm)
- Bidirectional automatic winding for time
- Manual winding for alarm
22 jewels
Alarm hammer on wire gong inside case back
260 parts
power reserve of approximately 45 hours

Manual winding
- 1951-1958 Calibre 489 (also P489 with Parachoc shock resistance) - screwed balance, dual top plates
- 1952 Calibre 601 - transitional model, fewer than 2,000 produced, with a single top plate
- 1953-1964 Calibre 814 - improved model (also Parachoc P814 and Kif K814) - screwed balance, single top plate
- 1962-1979 Calibres 910 and 911 - 911 added a date function, solid balance, dual top plates
- 1996 Calibre 914 - manual with gong
Automatic winding
- 1956-1966 Calibre 815 - bumper automatic, 18,000 A/h; 825 adds a date function
- 1959-1969 Calibre 825 - Cal. 815 plus date function
- 1969-1983 Calibre 916 "Speedbeat" - free-turning rotor, 28,800 A/h, date, Kif only
- 1994-2008 Calibre 918 - updated 916
- 2007-present Calibre 912 - automatic, gong, 24-hour function
- 2008-present Calibre 956 - automatic, gong
Specialty calibres
- 1989 Calibre 919 - perpetual calendar and bronze gong
- 2005 Calibre 909 - selectable gong or vibration