Seiko Prospex SPB453J1 Men's Watch Black • Automatic Movement Calibre 6R55 • Sapphire Crystal

The Seiko Prospex SPB453J1 is a classic automatic dive watch inspired by the legendary 1965 original, designed for divers and watch enthusiasts who demand uncompromising durability and timeless design. The 40 mm stainless steel case with a combination of satin and polished finishing houses the in-house Calibre 6R55, an automatic movement with manual winding, an accuracy of +25/−15 seconds per day, and an impressive power reserve of approximately 72 hours. The black dial with highly legible LumiBrite hands and indices ensures optimal readability even underwater.

The unidirectional rotating bezel in stainless steel allows precise measurement of dive time. The scratch-resistant sapphire crystal reliably protects the dial, while the screw-down crown and screw-down case back ensure water resistance to 300 metres, well beyond the requirements of ISO standard 6425 for dive watches. The matching stainless steel bracelet with a safety clasp and extension link for use over a wetsuit completes the professional specification.

Key Features of the Seiko SPB453J1 Watch

• Calibre 6R55 automatic movement with approx. 72-hour power reserve and manual winding for maximum reliability in the field
• 300 m water resistance to ISO dive watch standard, unidirectional rotating stainless steel bezel, and screw-down crown for professional diving
• Sapphire crystal with anti-reflective coating and LumiBrite luminous material on hands and indices for excellent legibility in the dark

Care Instructions for Wristwatches

Care & Cleaning

• Daily: Wipe case and bracelet with a soft, dry cloth to remove dirt and perspiration.
• Water-resistant watches: Clean with mild soapy water and a soft brush, rinse, dry thoroughly.
  Important: Screw the crown down firmly beforehand!!!
• Not water-resistant: Clean only dry or slightly damp, do not use water or cleaning agents.
• Avoid: Harsh chemicals, perfume, cosmetics and heat.
• Leather straps: Do not soak, clean only slightly damp and allow to dry away from heat.
• Water resistance: Do not wear in the shower or bath, have it tested annually.
• Battery (quartz): Have a depleted battery replaced immediately.
• Mechanical watches: Service by a master watchmaker every 5 years.

Storage & Handling

• Store the watch separately, not in direct contact with other jewellery (risk of scratching).
• Place mechanical watches on a flat surface when winding, do not leave the crown pulled out.