Differences

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+====== 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}}