Big Ingenieur, 45.5 mm

IWC's Big Ingenieur is the oversized reading of the Ingenieur, launched in 2007 on a 45.5 mm case. It was built both as a seven-day automatic on the Pellaton-wound calibre 51113 and as a flyback chronograph on the in-house calibre 89360, in stainless steel, rose gold and platinum. This is a pre-owned 2012 example.