Omega Seamaster Planet Ocean 600M Quarter Grey‑Orange

43.5mm, 316 stainless steel case, unidirectional rotating bezel, sapphire crystal, screw‑in steel crown. Cal.8900 automatic‑winding movement, double‑T shock absorber black rotor, quick‑set hour hand for date adjustment. Optional fluororubber strap or 316 stainless steel bracelet with folding clasp, helium escape valve, 600‑meter water resistance.