The omega constellation star is an exquisite timepiece that is also a commitment to omegas social responsibility especially created to help orbis international and its flying eye hospital in the fight against preventable blindness omega will donate a portion of the sale of each constellation star to orbis this model has a 24mm stainless steel case on a matching bracelet applied 18ct white gold sub brushed blue dial surrounded by a diamond set bezel domed scratch resistant sapphire crystal