This is an authentic IWC 18K Rose Gold Alligator Diamond 37mm Portofino Automatic Watch IW458116. This watch is crafted of 18 karat rose gold and features a silver dial, diamond hour markers, brown alligator strap, sapphire crystal, and an automatic movement. Follow this item for alerts. IWC is a registered trademark of IWC. FASHIONPHILE is not affiliated with IWC.