Steel Omega Seamaster Planet Ocean Chrono 2918.50.82. Case diameter 45.5mm water resistant to 600 meters. Automatic chronometer movement Omega 3313 chronograph movement with column wheel mechanism and Co-Axial Escapement, 52 hour power reserve.Black dial with luminous tapered index hour markers with orange numeral quarter markers, date display. Black rubber coated strap with orange stitching and folding clasp. Box and papers dated September 2012, Our reference S21294.