====== JLC 854/1 ======
The **JLC 854/1** is a mechanical watch movement from [[Jaeger-LeCoultre]].

Closely related to the [[JLC 844]], the 854/1 adds the ability to drive a second face on the rear of the case in the [[Jaeger-LeCoultre Reverso Duoface]].

The 854 was introduced in [[1994]] with the original Reverso Duoface. It originally included a small inset [[corrector]] to advance the GMT function, and watches came with a "stylus". The 854/1 was introduced with the "updated version" Reverso Duoface and includes a large square [[button]] rather than the small pusher.

The calibre 854/1 contains 180 parts, including 21 [[jewel]]s, and has a frequency of 21,600 vph (3Hz). It measures just 3.80 mm in depth.

===== Applications =====
Jaeger-LeCoultre currently uses this calibre in four [[Jaeger-LeCoultre Reverso Duoface|Reverso Duoface]] models 

  * [[Jaeger-LeCoultre Reverso Duoface]]
  * [[Jaeger-LeCoultre Reverso Duetto Duoface]]
  * [[Jaeger-LeCoultre Grande Reverso Ultra Thin Duoface]]
  * [[Jaeger-LeCoultre Grande Reverso Ultra Thin Duoface Bleu]]

===== See also =====
  * [[JLC 844]]
  * [[JLC 864]]
  * [[Jaeger-LeCoultre Reverso Duoface]]

<WRAP ud ud_mov>
**Manufacturer:**
  * [[Jaeger-LeCoultre]]

**Description:**
  * [[Hand-winding]] movement
  * 180 components

**Functions:**
  * Front
    * Center hour/minute
    * Small seconds
  * Back
    * Center hour/minute
    * 24-hour display
  * [[GMT]] button for back

**Data:**
  * H 3.8 mm
  * 21 [[jewels]]
  * 21,600 A/h
  * Power reserve 45 Hours

**Production period:**
</WRAP>

{{tag>Movements Manual_winding_movements GMT_movements Dual_timezone_movements Jaeger-LeCoultre_calibres Jaeger-LeCoultre_Reverso_calibres Duoface_movements}}