Brand New Authentic IWC Portofino Chronograph model IW391405. Features a stainless steel case and green alligator leather strap. The green dial displays silver tone hands, index hour markers with minute markers around the outer rim, and features two sub-dials (30 Minute chronograph function; 60 Second chronograph function). Powered by an automatic chronograph movement based on IWC Calibre 79350 engine mechanism with a 44 hours power reserve. Includes round case shape, dimensions of 39mm diameter and 12.7mm thickness, solid case back, water resistance up to 30 meters (100 feet), and comes with a 2 year WatchMaxx warranty.