The Spitfire Mark XVI, successor to the popular Spitfire Mark XV, is a millimetre larger in diameter than its predecessor, giving the proportions of the watch even better balance. The functional design of the dial takes up IWC?s Pilot Watch tradition and takes the basic idea a logical step further: the perfect amalgamation of form and function. All driven effortlessly by the automatic 30110 calibre movement, which has a power reserve of 42 hours and advances the date display.