[Audemars Piguet Watches] 7750 modified 3126 fully automatic chronograph mechanical movement The watch mirror is made of high-quality sapphire glass mirror is made of high-quality 316 stainless steel Xin case with high-quality fluororubber strap Original pin buckle Tough guy must-have artifact After multiple processes of polishing and frosted treatment Finally, AP's unique octagonal bezel expresses sharp and angular lines Audemars Piguet entry-level watch highly recommended