This is an authentic IWC Stainless Steel Alligator 41mm Portugieser Chronograph Automatic Watch IW371604. This IWC Portugieser Chronograph is crafted from stainless steel and features an automatic movement with a chronograph complication, white dial, smooth bezel, and black alligator strap with deployant clasp. Follow this item for alerts. IWC is a registered trademark of IWC. FASHIONPHILE is not affiliated with IWC.