IWC Portofino Chronograph steel bracelet Ref. IW391030
Case made of polished stainless steel, case diameter 42 mm, case height 13.5 mm, Millanese bracelet made of satin stainless steel with folding clasp, black dial with applied indices, automatic, caliber 75320 with 25 jewels, 44 hour power reserve, chronograph, date display and weekday display in English , sapphire crystal, screwed and engraved stainless steel back, water resistant up to 3 bar.