Seiko Mod. Spb483j1 Official Box Product Description: The Seiko Prospex SPB483J1 seamlessly blends professional-grade diving capabilities with refined aesthetics, making it suitable for both underwater adventures and everyday wear. Key Features: Movement: Seiko Caliber 6R55 automatic with manual winding Power Reserve: Approximately 72 hours Case Material: Stainless steel Case Dimensions: Diameter 41.3mm, Thickness 12.5mm Dial: Cobalt blue with wave-inspired pattern Bezel: Unidirectional rotating polygonal bezel Crystal: Sapphire with anti-reflective coating on the inner surface Water Resistance: 300 meters (ISO-certified for professional diving) Luminous Features: Lumibrite on hands, indexes, and bezel Bracelet: Stainless steel with three-fold clasp, secure lock, and push-button release with extender Specification Value Packaging Official Box