IWC Schaffhausen Big Ingenieur

The IWC Big Ingenieur, reference IW500503, has a 45.7 mm case in 18-carat 5N gold. The watch's case has a thickness of 14.3 mm. The movement is self-winding and has a 168-hour power reserve and 42 jewels. Behind convex sapphire glass, the silver-plated dial has a date display, central hacking seconds and a power reserve indicator. 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. Calibre 51113 operates at a frequency of 21,600 vibrations per hour.