This is a 2009 45.5mm Omega Seamaster Planet Ocean. The Omega caliber 8500 coaxial movement is accurate. The entire watch looks extremely clean with a barely noticeable mark on the bezel near 1:00. This watch is equipped with a sapphire crystal, original rubber Omega band, signed buckle, helium escape valve, and an amazing black dial. The local owner we purchased this from could not find the box and papers.