IWC caliber 89801
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89801 description
Mechanical chronograph movement, stopwatch function with hours, minutes and seconds, hour and minute counters combined in a totalizer at 12 o'clock, flyback function, small hacking seconds, perpetual calendar, large double-digit display for both the date and month, leap year display.
All watches using the IWC 89801 movement:
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IW3791-05
IWC Pilot's Watch Spitfire Perpetual Calendar Digital Date-Month

IW3794-01
IWC Aquatimer Perpetual Calendar Digital Date-Month Titanium / Red Gold / Black

IW3791-07
IWC Pilot's Watch Spitfire Perpetual Calendar Digital Date-Month Stainless Steel

IW3791-08
IWC Pilot's Watch Spitfire Perpetual Calendar Digital Date-Month Stainless Steel

IW3972-01
IWC Portugieser Perpetual Calendar Digital Date-Month Edition "75th Anniversary" Platinum

IW3972-02
IWC Portugieser Perpetual Calendar Digital Date-Month Edition "75th Anniversary" Red Gold / Black

IW3972-03
IWC Portugieser Perpetual Calendar Digital Date-Month Edition "75th Anniversary" Red Gold / Silver

IW3972-04
IWC Portugieser Perpetual Calendar Digital Date-Month Edition "75th Anniversary" Red Gold / Blue

IW3794-02
IWC Aquatimer Perpetual Calendar Digital Date-Month Titanium / Red Gold / Blue

IW3791-04
IWC Pilot's Watch Spitfire Perpetual Calendar Digital Date-Month Laureus Charity Night Zürich 2012