The dial boasts a striking Katsuiro color, deeply inspired by the traditional indigo shades of Japan. Its significance lies in being the preferred hue of Samurai warriors, believed to bring good luck on the battlefield and oft en used to adorn their armor. Crafted to mimic the rugged texture of natural rock, each dial bears a unique pattern, as if carved by hand. Thanks to Grand Seiko's innovative Spring Drive caliber, the seconds hand glides seamlessly and noiselessly, without any audi ble ticking, symbolizing the constant and fluid passage of time. With a generous power reserve of 72 hours when fully wound, clearly displayed on the discreet indicator near the eight o'clock mark.