Chronograph 1 Utility Limited EditionInspired by the military chronographs of the past, the Chronograph 1 Utility Limited Edition combines state of the art technology with the heritage of its historic predecessor: even lighter, more scratch resistant, and still perfectly readable. Where tritium was once used, today blue Super LumiNova is applied. Highest precision is ensured by Porsche Designs own caliber WERK 01. 240 with flyback function. The use of titanium carbide sets new standards