Brand New Authentic Omega Constellation Co-Axial Master Chronometer Automatic. Champagne Dial, Diamond Hour Markers, Date Display at 6 o'clock. 18K Yellow Gold Case with Polished and Brushed Finish. Roman Numerals Bezel. Blue Leather Strap with Tang Clasp. Swiss Automatic Co-Axial Chronometer Movement - Calibre 8701. Power Reserve: 50 hours. Water Resistance: 50 meters / 165 feet. Includes Date Function, Hour, Minute, Second Display.