GR Production .GR Factory presents the new Audemars Piguet Royal Oak Rainbow, model 15412BC.Audemars Piguet .15412BC Frosted Skeleton Rainbow .Men s Mechanical Watch Calibre 3132, with a case diameter of 41mm and a thickness of 9.9mm. Deep gray dial with a round shape and a skeleton dial design, complemented by luminous three dimensional hour markers and Royal Oak hands. The watch features an anti reflective sapphire crystal glass for the case and a screw down crown. The transparent case back is protected by anti reflective sapphire glass.The best luxury gift recommendation. Please recognize GR s exclusive quality.