IWC Schaffhausen Portugieser Chronograph pairs classic dress-watch proportions with a precise manufacture chronograph movement, ideal for daily wear and formal occasions. Key attributes: Dune | Black | Stainless steel | Water resistance 3 bar | Sapphire crystal | Calibre 69355, 46-hour power reserve | Chronograph function | Automatic winding | Folding clasp | Dune dial with vertical subdial layout | Arabic numerals | Convex sapphire glass with anti-reflective coating | Dimensions & fit: Case diameter: 41 mm | Case height: 13 mm | Strap width: 20 mm | Lug-to-lug: 48 mm | Composition & care: Stainless steel | Leather | Sapphire crystal | Wipe with a soft cloth; avoid contact with solvents and prolonged exposure to water; have the watch serviced by an authorised service centre.