Omega Seamaster 300m Diver “Full Set” Reference 21230412001003. 41 mm steel case, sapphire crystal, ceramic bezel, black dial, steel bracelet with folding clasp. Watertight at 300 meters, helium valve at 10 o’clock. Automatic Omega 2500 coaxial COSC movement. Year 2018. Complete with boxes and documentation. With one year warranty.