Brand New Authentic IWC Portofino Hand Wound Eight Days Men's Watch Model IW510103. Stainless Steel case with Brown Crocodile Leather strap. Tang Buckle clasp. Silver dial. Manual Winding movement. Scratch Resistant Sapphire crystal. Case size: 45mm. Case thickness: 12mm. 30 Meters - 100 Feet. water resistant. 2 year WatchMaxx warranty. Also known as model: IW5101-03, 5101-03, 510103, IW5101.03.