The Spitfire Chronograph (Ref.3878) is equipped with the IWC-manufactured 89365 calibre. Apart from increasing the watch’s power reserve to 68 hours, it accommodates a stopwatch function with minutes and seconds as well as a flyback function.Since its initial launch in 2006, the Spitfire Chronograph from IWC Schaffhausen has enjoyed increasing popularity. Now, with the slate-coloured dial, it has taken on a chic new face.