Calibre 916 (branded “Speedbeat”) was an automatic alarm movement from Jaeger-LeCoultre.
Introduced in 1969, Calibres 916 replaced Calibres 815 and 825 in the Jaeger-LeCoultre Memovox range. This calibre went out of production in 1978 but was eventually replaced by Calibre 919, introduced in 1994. A total of 7,731 watches were produced with Calibre 916.
There were two notable features of Calibre 916
As in other Jaeger-LeCoultre alarm calibres, the alarm hammer struck a protuberance on the back plate, making a distinctive buzzing sound. Even if the alarm was not wound, the hammer rattled freely against the protuberance. In Calibre 916, this protuberance fits through an extra-wide hole in the center of the rotor.
The Jaeger-LeCoultre Calibre 916 was used as an ebauche by Girard Perregaux, becoming the GP 080 Gyromatic alarm.
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