====== Zenith 4005 ====== **Zenith 4005** is a calibre by [[Zenith]]. [[Self-winding]] [[chronograph]] movement with [[tourbillon]]. Further development of the [[Zenith 410]] (//El Primero//) with bi-directional winding ball-bearing [[central rotor]] and [[date display]]. Used in model [[Zenith Grande Chronomaster XXT Tourbillon]] "El Primero". **Description:** * [[Self-winding]] movement, bi-directional winding * [[Escapement]] Stone lever * [[Yoke winding system]] * [[Tourbillon]] * Rotor in 22ct [[rose gold]] or [[white gold]] * [[Chronometer]] certificate ([[COSC]]) * [[Column wheel]] calibre * [[Shock protection]] Kif-Ultraflex * 319 components **Functions:** * [[Chronograph]] * [[Small seconds]] * Rapid calendar advance **Data:** * 15½ [[ligne]]s * D 35.0 mm, H 7.55 mm * 35 [[jewels]] * 36,000 A/h * Power reserve > 50h **Production period:** * Since [[2002]] {{tag>Movements Automatic_movements Chronograph_movements Zenith_calibres Zenith_el_primero_calibres}}