Rolex Datejust 31 Stainless Steel and White Gold Silver Dial M278274 0011 Women's Watch

[In-Depth Teardown] Why is this Datejust replica called the "Graduation Edition"?① The rhodium-plated grade 5 titanium material used in the case reaches a hardness level of HV800. ② The crystal features a 2.5mm thick sapphire crystal which achieves a 9H scratch resistance rating. ③ The movement now operates with a custom caliber 3235 which maintains daily accuracy within ±3 seconds. ④ The dial receives vacuum ion-plating treatment which extends its silvery appearance to last for ten years. Special improvements: A waterproof rubber ring has been added to the crown threads, achieving a measured water resistance of 100 meters. Each watch undergoes a 72-hour simulated wear test.