====== JLC 910 ======
**Calibre 910** and **Calibre 911** were [[manual winding]] [[alarm]] [[movement]]s from [[Jaeger-LeCoultre]].

Introduced in [[1962]], Calibres 910 and 911 replaced [[JLC 814|Calibres 814]] in the [[Jaeger-LeCoultre Memovox]] range. These were produced in large numbers, with 75,000 movements made through [[1979]].

As in previous Jaeger-LeCoultre calibres, [[Kif]] [[shock protection]] was added, giving the name, **Calibre K910** and **Calibre K911**. At some point, all of the calibres got Kif protection and the "K" was dropped.

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.

===== Specifications =====
  * 13 [[ligne]]s in diameter, 5.15 mm thick (910) or 5.6 mm thick (911)
  * [[Glucydur]] balance, automatically compensating flat [[hairspring]]
  * 19,800 A/h
  * [[Double barrel]] (time and alarm)
    * Unidirectional [[bumper]] automatic winding for time
    * Manual winding for alarm
  * Direct sweep central seconds
  * 17 [[jewels]]
  * Alarm hammer inside case back


{{wst>template_jaeger-lecoultre_alarm_calibres}}

===== External Links =====
  * [[http://omegaforums.net/threads/a-little-potted-history-of-the-memovox-my-recently-acquired-cal-911.4480/|A Little Potted History Of The Memovox & My Recently Acquired Cal 911]]
  * [[http://www.adamvintage.com/jaeger-lecoultre-memovox.html|Three Cheers for Memovox!]]


{{tag>Movements Manual_winding_movements Jaeger-LeCoultre_calibres Jaeger-LeCoultre_Memovox_calibres Alarm_movements}}