IWC Portofino Chronograph Watch - 42.0 mm Stainless Steel Case - Black Dial - Black Alligator Strap - IW391029 Transatlantique it bears the hallmark of

it bears the hallmark of a brand that has defined luxury for centuries

silver dial with applied indexes

openwork satin-brushed grid with sun ray finish

includes additional ultraresistant black synthetic fabric strap

2nd timezone

IWC Portofino Chronograph Watch - 42.0 mm Stainless Steel Case - Black Dial - Black Alligator Strap - IW391029 Transatlantique it bears the hallmark of42. 0 mm stainless steel case, 13. 6 mm thick, convex sapphire glass crystal with antireflective coating on both sides, black dial, calibre 75320 automatic movement with date, day, chronograph, hours, minutes, small seconds, approximately 44 hours of power reserve, black alligator leather strap. Water resistant to 3 bar.