IWC Ingenieur Perpetual Calendar Digital Date-Month (IW3792)

SIHH 2013…

IWC Ingenieur Titanium Perpetual Calendar Digital Date Watch

Like its first case in carbon fiber (IW3224), IWC also presents its first case in titanium aluminide this year.  Titanium aluminide is used widely in motorsport: the alloy is lighter and more robust than pure titanium. The black parts of the case are made of zirconium oxide, yet another material typically used in Formula One.

And this is also an interesting piece in IWC’s spotlighted Ingeniuer collection as it is a perpetual calendar, but with digital date and month.  IWC has also employed an innovative “quick-action switch” in this piece.  It works like this:  every night, when the date changes, this sophisticated mechanism siphons off a little energy, stores it and then discharges it precisely at the end of the month to rotate the display discs. At the end of the year, no fewer than five display discs need to be advanced synchronously. On New Year’s Eve/end of year, thanks to the three semi-transparent totalizers, the entire dial is set in motion (a sight to see!).  The perpetual calendar takes the 29th day of February into account every 4 years, and will remain accurate until 2100.

High-res looks/specs, below.

IWC Ingenieur Perpetual Calendar Digital Date-Month (IW379201)

Price $49,700

46mm titanium aluminide case, automatic IWC caliber 89802 — perpetual calendar with digital date and month display, leap year display, flyback chronograph

IWC Ingenieur Titanium Perpetual Calendar Digital Date Month IW379201

IWC Ingenieur Perpetual Calendar Digital Closeup

IWC digital date display

the IWC-manufactured 89802 calibre with rotor resembling the spokes on a light alloy wheel rim:

IWC Ingenieur Titanium Perpetual Calendar Digital Date Rotor IW379201


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  • Afrayedknot

    Nice to see IWC producing something a little less conservative. I’d love to have one of these.

    • Perpetuelle

      @Afrayedknot:disqus Yes this is definitely a winner this year for IWC. Great functions and design. Though I must say that rotor looks very much like the Hublot F1. Not that they have an exclusive on the design, but just saying :-)

      • Afrayedknot

        I see the resemblance, but oddly enough, the IWC rotor looks more like a wheel rim than does that of the Hublot.