The IW510301 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 IW510301 has a stainless-steel case that is 48mm in diameter, 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 IW510301 is powered by the manual 59215 caliber which has date functionality and a power reserve of an impressive 192 hours. The case is paired with a brown calfskin leather strap that has a stainless-steel fold-over clasp. It has a water resistance of 60 meters (200 feet).