Movement: The SPB463J1 is powered by the Seiko Caliber 6R55, an automatic movement with manual winding capability. It offers a remarkable power reserve of approximately 72 hours (3 days), ensuring reliable timekeeping over extended periods. Case: Crafted from stainless steel with a super hard coating, the case measures 40.2mm in diameter, 13.0mm in thickness, and 46.0mm lug-to-lug, providing a robust yet comfortable fit. The dual-curved sapphire crystal with an anti-reflective coating on the inner surface enhances durability and clarity. Dial: The dial features a warm white color with a pressed pattern that evokes the texture of silk fabric, a material with deep roots in Japanese culture.
