Calibre 914 is based on its predecessors, Calibres 910 and 911, but with significant improvements. It beats at a modern 28,800 A/h rather than 19,800 A/h as in the previous models. It is upgraded with 18 jewels, one more than before.
But the most significant improvement is the use of a nicer-sounding gong for the alarm function. One benefit of ringing a gong rather than the case back is that, for the first time, a Jaeger-LeCoultre Memovox can have a transparent sapphire case back, allowing the movement to be viewed.
Jaeger-LeCoultre Alarm Calibres
- 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
- Specialty calibres