The IW501001 is a model that showcases the advancement of the Big Pilot collection from IWC with an in house caliber and a smoother visual facelift. The IW501001 has a stainless-steel case that is 46.2mm in diameter and 15.5mm thick with a screw-in crown, an anti-reflective sapphire crystal and an inner iron case to protect against magnetic fields. The dial is black with white Arabic numeral hour markers, a power reserve indicator sub-dial, and a date window. The IW501001 is powered by the self-winding 52110 caliber which has date functionality and a power reserve of 168 hours (7 days). The case is paired with a black calfskin leather strap that has a stainless-steel fold-over clasp. It has a water resistance of 60 meters (196 feet).