An authentic men's IWC Portofino Chronograph watch model IW391029. Features a round polished stainless steel case, black alligator leather strap (Tang clasp), fixed bezel, silver-tone hands and Roman numeral hour markers on the black dial, automatic self-winding movement with 44 hours power reserve, day of the week and date display in the 3 o'clock position via sub-dials, central chronograph second hand, tachymeter function (seconds dial), minute repeater capability (30-minute dial), water resistance up to 100 feet or 30 meters.
