IWC Portofino Chronograph Watch - 42.0 mm Stainless Steel Case - Silver Dial - Milanaise Mesh Steel Bracelet - IW391028 Diamond black dial is centred within

black dial is centred within a robust 41mm stainless steel case

Water resistant to 30 bar

Fitted with a self-winding mechanical movement that has a 38-hour power reserve

Water resistant to 300 metres

IWC Portofino Chronograph Watch - 42.0 mm Stainless Steel Case - Silver Dial - Milanaise Mesh Steel Bracelet - IW391028 Diamond black dial is centred within42. 0 mm stainless steel case, 13. 6 mm thick, convex sapphire glass crystal with antireflective coating on both sides, silver plated dial, calibre 75320 automatic movement with date, day, chronograph, hours, minutes, small seconds, approximately 44 hours of power reserve, milanaise mesh stainless steel bracelet. Water resistant to 3 bar.