IWC caliber 94805
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94805 description
IWC manufactured 94805 calibre (94000-calibre family) is a hand-wound movement with a tourbillon escapement. A patented constant force mechanism is integrated into the tourbillon, ensuring a stable amplitude of the balance - visible through 1 second jumps of the tourbillon. After having run for 48 hours, the constant force mechanism is decoupled and the tourbillon will move in regular 1/5th of a second intervals. It furthermore features a day/night indication, double moonphase display and a 96 hour power reserve.
All watches using the IWC 94805 movement:
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IW5902-02
IWC Portugieser Constant-Force Tourbillon Edition “150 Years” Platinum / White

IW5902-03
IWC Portugieser Constant-Force Tourbillon Edition “150 Years” Platinum / Blue

IW5903-03
IWC Big Pilot Constant-Force Tourbillon Le Petit Prince / Red Gold

IW5903-02
IWC Big Pilot Constant-Force Tourbillon Le Petit Prince / Platinum