IWC Big Ingenieur 5005-01 features a 45.5mm stainless steel case and scratch resistant sapphire crystal. The dial is black with a guilloche inner dial, applied steel baton hour indices with luminous fills, a surrounding raised minute track, power reserve indicator at 3, and date apeture at 6, and stick center hands which also contain white luminous fills. Powering this Big Ingenieur, and visible through the sapphire case back, is a self-winding, IWC 51113 caliber that contains 42 jewels and boasts a 168-hour power reserve. Watch is on an integrated, rubber-backed black alligator strap with steel pin buckle.
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