IWC Schaffhausen Big Ingenieur Chronograph

The IWC Big Ingenieur Chronograph, reference IW378402, is a chronograph with a case in 18-carat 5N gold. Self-winding calibre 89360 has a 68-hour power reserve, 40 jewels and 288 components. The black dial has a date display, small hacking seconds and a flyback function. The watch is on a brown alligator leather strap. The case carries a water-resistance rating of 120 metres. The movement has Côtes de Genève and perlage decoration. The movement runs at 28,800 vibrations per hour. The dial is covered by convex sapphire glass with antireflective coating on both sides.