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+====== Zenith 405 ======
+Calibre **405** (and updated **405B**) is an [[automatic]] [[flyback]] [[chronograph]] movement from [[Zenith]]. Released in the 1990's, this was one of the first modifications to the classic [[Zenith 3019PHC|El Primero movement]].
+===== Overview =====
+As the El Primero renaissance continued in the 1990's, Zenith made the first major [[complication]] addition with the introduction of the [[flyback]]-equipped **Cal. 405**.
+Because of the unconventional 4 30 date window placement in the classic El Primero movement, Zenith created a new calibre, **Cal. 405B**, which moved the date to the 6 00 position.
+===== See Also =====
+  * [[Zenith 400B]] - The base movement
+  * [[Zenith 4001]], [[Zenith 4003]], [[Zenith 4009]] - Other flyback El Primero movements
+  * [[Zenith El Primero]]
+  * [[Zenith El Primero calibres]]
+  * [[Zenith El Primero watches]]
+<WRAP ud ud_mov>
+**Description:**
+  * [[Self-winding]] movement, bi-directional [[central rotor]] winding
+  * [[Escapement]] Stone lever
+  * [[Yoke winding system]]
+  * [[Column wheel]] calibre
+  * 331 components
+**Functions:**
+  * [[Flyback]] [[chronograph]] 60 seconds, 30 minutes, 12 hours
+  * [[Small seconds]]
+  * [[Quickset]] date at 4 30 or 6 00
+**Data:**
+  * 13¼ [[ligne]]s
+  * D 30.0 mm, H 6.5 mm
+  * 31 [[jewels]]
+  * 36,000 A/h
+  * Power reserve 50 hours
+**Production period:**
+  * -present
+</WRAP>
+{{tag>Movements Automatic_movements Chronograph_movements Automatic_chronograph_movements Column_wheel_chronograph_movements Flyback_chronograph_movements Zenith_calibres Zenith_El_Primero_calibres}}