Brand New Authentic IWC Portofino Chronograph 150 Years Edition Blue Dial Leather Strap Men's Watch Model IW391023. Stainless Steel case with Black Leather Alligator strap. Tang clasp. Dial description: Silver tone hands and Index hour markers with minute markers around the outer rim and 3 sub-dials on a Blue dial. Automatic Chronograph movement. Calendar: Day of the Week and Date in 3 o'clock area. Chronograph sub-dials display: 60 Second, 30 Minute, 12 Hours. Powered by IWC Calibre 79320 engine with 44 hours power reserve. Watch functions: Date, Power Reserve, Hour, Minute, Second, Chronograph. Scratch Resistant Sapphire crystal. Round case shape. Case size: 42mm. Case thickness: 13.5mm. Solid case back. 30 Meters - 100 Feet water resistant. 2 year WatchMaxx warranty. 150 Years Anniversary - Limited Edition of 2,000 pieces