Seiko Prospex Diver Scuba HBC005J — 145th Anniversary 1965 Heritage Limited Edition (JDM)

Celebrate Seiko’s history of underwater innovation with the Seiko Prospex Diver Scuba HBC005J, an exclusive Japanese domestic market (JDM) model released as a limited edition to commemorate the manufacturer’s 145th anniversary.

Inspired by the legendary design of Seiko’s first diving watch from 1965 (the iconic 62MAS), this model combines classic heritage aesthetics with the Japanese brand’s most advanced modern technology. With an optimized 40 mm case, an impressive water resistance of 300 meters, and the prestigious 6R55 automatic caliber with a 3-day power reserve, it is a true collector’s item designed to withstand the most demanding environments.

Key Features

• JDM (Japanese Domestic Market) Limited Edition: A very limited-production model exclusive to the Japanese market, ensuring its high exclusivity and appeal to collectors.
• 6R55 In-House Automatic Caliber: Equipped with one of Seiko’s most reliable automatic movements, which stands out for its precision and an excellent 72-hour (3-day) power reserve.
• A Tribute to the Legacy of 1965: A contemporary redesign of Japan’s first diving watch, respecting the vintage proportions but enhanced with modern materials.
• Professional Diving Performance (300m): True water resistance of 300 meters certified for professional diving, featuring a screw-down crown and an ultra-precise rotating bezel.
• Sapphire Crystal with Anti-Reflective Coating: Maximum scratch resistance and optimal readability in direct sunlight or at ocean depths.
• Superior Lumibrite Luminiscence: Hands and hour markers treated with Seiko’s patented luminous compound, ensuring exceptional visibility in the dark.

Technical Specifications

Feature Detail

Brand Seiko

Collection Prospex (Diver Scuba)

Reference HBC005J (145th Anniversary Limited Edition)

Origin Made in Japan (JDM)

Movement Automatic with manual winding capability

Caliber Seiko 6R55 (Manufacture)

Power Reserve Approx. 72 hours (3 days)

Case Material High-strength stainless steel

Case Diameter 40.0 mm

Case Thickness 13.0 mm

Dial Color Brushed silver

Crystal Sapphire with anti-reflective coating on the inner surface

Water Resistance 300 meters / 1,000 feet (Diver’s)

Bracelet Material Stainless steel with a three-fold safety clasp

Additional Functions Calendar (date), seconds stop, anti-magnetic, screw-down crown

The Legacy of 1965 in an Exclusive Edition

The Seiko Prospex HBC005J is not just a high-performance dive watch; it is a direct tribute to the brand’s pioneering spirit. The brushed silver dial captures light exceptionally well, emulating the sun’s reflections on the ocean’s surface, while its 40-mm-diameter case sits on the wrist with impeccable comfort and presence.

At its heart beats the in-house 6R55 caliber, a robust, state-of-the-art automatic movement that beats at 21,600 vibrations per hour. Its 3-day power reserve offers the peace of mind of being able to leave the watch off all weekend and find it running perfectly on Monday morning.

As a limited-edition model with JDM specifications, its availability outside of Japan is extremely limited, making it a coveted object of desire for both divers and fine watch enthusiasts alike.