Authentic Omega Seamaster Planet Ocean 600M Chronograph model 215.33.46.51.03.001, also known as O21533465103001 or 215-33-46-51-03-001. This stainless steel men's watch features a blue alligator leather strap with folding clasp, a unidirectional bezel and a striking blue dial displaying the date. It is powered by an automatic self-winding movement, equipped with scratch-resistant sapphire crystal and offers 600 meters or 2000 feet water resistance along with a WatchMaxx warranty for five years.