IWC Blue Stainless Steel Portugieser IW3902-13 Automatic Men's Wristwatch. Key features include: blue dial, stainless steel case and bracelet (smooth finish), 45 mm case size, automatic mechanical movement ensuring all-day self-winding functionality, timeless design inspired by vintage models with Roman numeral hour markers, sapphire crystal glass for scratch resistance on the front, leather or other strap options typically included depending on configuration. A sophisticated timepiece known for its heritage and enduring style.