Seiko Watches Prospex Sea HBC005 Limited Edition

The Seiko Prospex Sea HBC005J1 145th Anniversary Limited Edition brings together Seiko’s historic diving-watch heritage, modern mechanical performance, and collectible limited-edition design. Created to celebrate Seiko’s 145th anniversary, this exclusive Prospex diver draws inspiration from the original 1965 Seiko diver’s watch, Japan’s first diver’s watch, while introducing distinctive blue accents inspired by the iconic “Seiko Blue.”

At the heart of the HBC005J1 is Seiko’s Caliber 6R55 automatic movement, featuring both automatic and manual winding, 24 jewels, stop-seconds functionality, and an impressive approximately 72-hour power reserve. This combination provides the convenience of an extended power reserve with the mechanical character enthusiasts expect from a premium Seiko automatic watch.

The 40mm stainless steel case offers a compact, refined profile inspired by Seiko’s 1965 diving legacy. A curved sapphire crystal with anti-reflective coating on the inner surface helps provide excellent clarity and durability, while LumiBrite on the hands, indexes, and bezel enhances visibility. The blue unidirectional rotating bezel and matching blue seconds hand create a distinctive anniversary aesthetic against the silver-white dial.

Built for serious aquatic environments, the Seiko Prospex HBC005J1 provides 300-meter / 1,000-foot diver’s water resistance, complemented by a screw-down crown, screw case back, and unidirectional rotating bezel. Its adjustable bracelet clasp provides a 15mm adjustment range in six 2.5mm increments, helping deliver a comfortable, secure fit.

Limited to only 4,000 pieces worldwide, the HBC005J1 is more than a capable dive watch—it is a commemorative Seiko timepiece designed for collectors and enthusiasts who appreciate Japanese watchmaking heritage. Discover the Seiko Prospex Sea HBC005J1 Limited Edition at Lexor Miami.

Key Features

• 145th Anniversary Limited Edition — produced in a worldwide edition of only 4,000 pieces.
• 1965 Heritage-inspired design — based on Seiko’s pioneering first Japanese diver’s watch.
• Seiko Caliber 6R55 automatic movement — mechanical performance with manual-winding capability.
• Approximately 72-hour power reserve — keeps running for around three days when fully wound.
• 300m / 1,000ft diver’s water resistance — engineered for air diving.
• 40mm stainless steel case — compact proportions inspired by Seiko’s historic diver design.
• Curved sapphire crystal — durable crystal with inner anti-reflective coating.
• Signature Seiko Blue accents — blue aluminum bezel insert and seconds hand commemorate Seiko’s heritage.
• LumiBrite illumination — applied to the hands, indexes, and bezel for enhanced underwater visibility.
• Unidirectional rotating bezel — practical timing functionality associated with dive-watch design.
• Adjustable stainless steel bracelet clasp — 15mm adjustment range in six 2.5mm increments for improved comfort.
• Limited-edition case back — marked “LIMITED EDITION,” reinforcing its collectible character.

Technical Specifications

Own a Piece of Seiko History

The Seiko Prospex Sea HBC005J1 145th Anniversary Limited Edition combines 1965 dive-watch heritage, a 72-hour automatic movement, 300-meter water resistance, sapphire crystal, and an exclusive production run of just 4,000 pieces.

Shop the Seiko HBC005J1 at Lexor Miami today and add a distinctive limited-edition Prospex diver to your collection before availability becomes increasingly limited.