Audemars Piguet 15400 Series Upgrade V2 Version Men's Watch, equipped with the stable performance 9015 modified Caliber movement. It features super sapphire glass that is more scratch-resistant and durable. The strong luminous display ensures visibility in the dark. Each dial pin is individually processed in Japan, and the Taiwanese factory uses multiple procedures to ensure that each piece is polished and assembled with care, providing a closer fit to the wrist for comfortable wear. Each calendar is meticulously set with a corresponding color. The V2 version of the movement has been fully updated with a gold rotor, pursuing perfection in every detail. Each component has been carefully compared, with a diameter that matches the original at 41mm. With 20 years of experience, the Taiwanese factory focuses on creating the strongest polished steel, delivering overall quality comparable to major manufacturers.