Gents Steel Omega Speedmaster Moonwatch Split Seconds 322.214.171.124.01.001. Co-Axial Chronometer movement, Omega Caliber 3612. 44.25mm case diameter. Water resistant to 100 meters. Date, hour, minute and continuous small seconds hands, central chronograph hand with split-second hand. Also features 30 minute and 12 hour sub dials. Steel bracelet with folding clasp. See through case back. Box and papers dated August 2011. Our reference A1598.