Omega Seamaster 300 Master Co-Axial 41mm. 188.8.131.52.01.001. 41mm brushed and polished stainless steel case. Water resistant to 300 meters. Automatic Omega Calibre 8400 co-axial movement, Free sprung-balance equipped with silicon balance spring and a power reserve of 60 hours. Sand blasted black dial with rhodium plated hands coated with “vintage” Super-LumiNova. Polished ceramic bezel ring. Steel brushed and polished bracelet with folding clasp. Box and papers dated April 2016.