The IWC Big Pilot 5103-01 is not the largest of the IWC's debuted at SIHH in 2016. This is the Big Pilot Heritage in titanium and limited to just 1000 pieces. The watch is oversized, instrument style, aviation and designed for legibility. The watch measures 48mm across the wrist and is 14.8mm thick. From lug to lug the watch measures 61.5mm and is true to the oversized wrist.
Shop IWC Pilot: https://www.thewatchbox.com/watches/iwc/iwc-pilot-s-watches/