Omega Seamaster 300 Omega Master Co-Axial Watch - 41 mm Brushed And Polished Steel Case - Unidirectional Bezel - Black Dial - 233.30.41.21.01.001 5147G001 38 mm stainless steel and

38 mm stainless steel and 18K yellow gold case

silvery opaline dial

43 mm platinum case with anti-magnetic protection

Reference Number 15454BA

Omega Seamaster 300 Omega Master Co-Axial Watch - 41 mm Brushed And Polished Steel Case - Unidirectional Bezel - Black Dial - 233.30.41.21.01.001 5147G001 38 mm stainless steel and41 mm brushed and polished stainless steel case, transparent back, screw in crown, unidirectional rotating bezel polished black ceramic ring and Liquidmetal diving scale, domed scratch resistant sapphire crystal with anti reflective treatment on both sides, sand blasted black dial with rhodium plated hands coated with vintage Super LumiNova, self winding chronometer Omega 8400 movement with Co Axial Escapement, and resistance to magnetic fields