Brand New Authentic IWC Portugieser Tourbillon Mystere Automatic Silver Dial 18K Rose Gold Brown Leather Strap Men's Luxury Watch Model IW504202. Brushed and Polished 18K Rose Gold case with Brown Alligator Leather strap. Rose Gold Folding clasp. Smooth bezel. Dial description: Polished Rose Gold Hands with Arabic Numeral Hour Markers with Minute Markers Around the Outer Rim, 2 Sub-dials and a Tourbillon on a Silver dial. Swiss Automatic. Tourbillon movement. Chronograph sub-dials display: Seconds, Power Reserve, Tourbillon. Powered by IWC Calibre 50900 engine with 168 hours power reserve. Watch functions: Hour, Minute, Second, Power Reserve. Push-Pull crown. Scratch Resistant Sapphire crystal. Round case shape. Case size: 44.20mm. Case thickness: 14.20mm. Transparent case back. 30 Meters - 100 Feet water resistant. 2-year WatchMaxx warranty. Also known as model: 504202.