Omega Railmaster 188.8.131.52.01.001. Automatic mechanical movement Omega Calibre 8806. Water resistant to150 meters. Black dial with luminous hour markers and hands, outer track minute markers. Power reserve of 55 hours. Steel case, 40mm diameter. Steel bezel. Steel Bracelet with folding clasp. Comes with an additional fabric strap with steel buckle. Mineral glass see through case back. Box and papers dated March 2018.