Steel Omega Speedmaster Broad Arrow Co-Axil Chronograph 3126.96.36.199.01.001. Case diameter 44.25mm. Water resistant to 100 meters. Automatic chronometer movement Omega 3313 chronograph movement with column wheel mechanism and Co-Axial Escapement, 52 hour power reserve. Black dial with Arabic numerals and silver sub dials. Tachymetre bezel. Date display at 4/5 o’clock position. Brushed steel bracelet with folding clasp. Box and papers dated April 2014. Our reference S21552.