Monday, February 6, 2012

SIHH 2012: IWC Spitfire Perpetual Calendar Digital Date-Month Ref. 3791

Flagship Pilots Watch. While IWC has offered a who gaggle of new Pilot's chronograph watches at SIHH: 2012, the flagship model for the year has to be the Spitfire Perpetual Calendar Digital Date-Month (Ref. 3791). This watch combines a stopwatch function with a perpertual calendar complication.


IWC Spitfire Perpetual Calendar Digital Date-Month Ref. 3791. The Spitfire Perpetual Calendar Digital Date-Month most interesting feature is the perpetual calendar. The date display on the typical watch has to be adjusted every other month to take into account that some months have 28 day, 30 days and 31 days, and to account for leap years. The perpetual calendar has a intricate movement that does that adjusting for you. A perpetual calendar is a mechanism that automatically takes into account the varying number of days in each month as well as leap years so that the watch displays the correct date each month without the need of adjustment. The movement in the Spitfire Perpetual Calendar Digital Date-Month will not require intervention until the year 2100, a year that breaks with the conventional four-year cycle and will not be a leap year. 

In addition, the watch also has a chronograph function, with hours and minutes of elapsed time being displayed in a sub-dial at the 12 o'clock. This totalizer is also special in the sense that it combines readings that are usually in two separate subdials, one for minutes and the other for hours. In the Spitfire Perpetual Calendar Digital Date-Month, two hands are used in one sub-dial. The chronograph movement features the flyback function which allows you to restart the count with a single button.

Despite the highly complex movement, this still has a excellent 68 hour power reserve.

Big Windows. The Spitfire Perpetual Calendar Digital Date-Month is the first IWC Pilot’s Watch to feature a digital display showing the date and month in large numerals. The large date and month windows was inspired by cockpit instrumentation that shows vital data, such as altitude, in figures. The four-year leap year cycle is also displayed digitally by a windows in the sub-dial at the 6 o'clock which display continuous seconds.  

Case. Befitting its stature as a exclusive piece, it comes in a case made of 18 carat red gold. The case is an imposing 46 mm in diameter. What this watch lacks is the soft iron inner ring for protection against magnetic interference which are found in IWC's other pilots watches. Presumably, this was removed to make room for the rather complicated movement inside.
The hours and minutes recorded by the stopwatch can be read off on the totalizer at “12 o’clock” as easily as reading the time, while the central chronograph hand shows the elapsed seconds. Thanks to the integrated flyback function, the stopwatch hand can be returned to zero and immediately starts recording another period of time. The watch owes its premium-quality look to the vibrant interchange of polished and satin-finished surfaces on the 18-carat red gold case. The shimmering, slate-coloured, metallic dial has a sun-pattern finish that creates a captivating contrast with the warm gold tone and the brown of the alligator leather strap.

About IWC. IWC or the the "International Watch Co. Schaffhausen" was founded by an American engineer from Boston, Florentine Ariosto Jones, in Schaffhausen, Switzerland in the year 1868. IWC Schaffhausen is notable for being the only major Swiss watch factory located in eastern Switzerland, as the majority of the well-known Swiss watch manufacturers are located in western Switzerland.

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