Audemars Piguet Royal Oak Offshore Limited Edition Multi-function Chronograph Mechanical Watch Size 44MM17MM [Bezel] The bezel is consistent with the original imported ceramic bezel [Crown] The crown is made of hexagonal ceramic material, and the top is brushed and polished [Movement] The movement is more domineering against the background of the transparent back cover. The gray-black automatic rotor is very layered, plus the gemstones inlaid on the surface of the movement. 7750 modified 3126 automatic chronograph mechanical movement [Watch mirror] The watch mirror uses imported sapphire glass mirror [Watch case] Uses imported 316 stainless steel Xin watch case [Watch strap] Matched with imported fluororubber watch strap original pin buckle tough guy must-have artifact After multiple processes of grinding and frosting, the AP's unique octagonal bezel finally expresses sharp lines. Audemars Piguet entry-level watch is highly recommended! ! !