SEIKO PROSPEX HBC005J1 SEA 145TH ANNIVERSARY LIMITED EDITION MEN WATCH

Seiko Prospex HBC005J1 — 145th Anniversary Limited Edition 1965 Heritage Diver's Watch

The Seiko Prospex HBC005J1 is the higher-specification model in Seiko's second wave of 145th Anniversary Prospex limited editions — the 1965 Heritage Diver in Seiko Blue, limited to 4,000 pieces worldwide. Built on the 1965 Heritage platform that traces its design DNA directly to the 62MAS — Japan's first diver's watch, produced in 1965 — the HBC005J1 takes the iconic compact 40mm case and applies the 145th Anniversary Seiko Blue treatment: a blue aluminium unidirectional rotating bezel, a blue seconds hand, and a silver-white dial that creates the clean, cool, formally modern aesthetic that defines the entire 145th Anniversary series.

The curved sapphire crystal with anti-reflective coating on the inner surface replaces the Hardlex of the larger sibling with optical clarity and scratch resistance. The three-fold clasp with secure lock, push-button release, and solid and slide adjuster completes a full professional diver's specification in the 1965 Heritage's compact and historically grounded case.

Key Features

• Seiko 6R55 automatic movement with manual winding and stop seconds — precise in-house mechanical performance
• Approx. 72-hour (3-day) power reserve — extended reliability for multi-day field and diving use
• Diver's 300M water resistance — professional dive specification at the top of the 145th Anniversary range
• Silver-white dial — the clean, fresh 145th Anniversary Seiko Blue design language
• Seiko Blue accent on rotating bezel insert and seconds hand — signature anniversary colour, restrained and precise
• Blue aluminium unidirectional rotating bezel — purpose-built for safe and accurate dive timing
• Lumibrite on hands, indexes, AND bezel — complete low-light legibility for diving use
• Curved sapphire crystal with anti-reflective coating on inner surface — clarity and scratch resistance
• 40.0mm stainless steel case — compact 1965 Heritage proportions at 13.0mm slim / 46.4mm lug-to-lug
• Screw-down crown — water integrity protection for diving use
• Screw caseback with "LIMITED EDITION" inscription — provenance marked
• Three-fold clasp with secure lock, push-button release, and solid & slide adjuster — fully featured diver's clasp
• Magnetic resistance 4,800 A/m — protection in everyday and field environments
• Limited to 4,000 pieces worldwide — confirmed and meaningful scarcity

Why You'll Love It

The HBC005J1 is the 145th Anniversary Prospex for the collector who wants the best specification in the series. The 1965 Heritage case traces directly to the 62MAS — Japan's first dive watch — and that provenance gives the Seiko Blue anniversary treatment a more specific and historically grounded context: this is Seiko connecting its diving heritage to the brand colour that has defined its identity since the 1960s, in a case that began the dive watch story sixty years ago. At 4,000 pieces worldwide, it is exclusive without being unattainable.

The Seiko Prospex Story

Prospex is a combination of the words "Professional" and "Specifications." Seiko Prospex timepieces are designed to be practical, reliable, and durable — built to meet the high standards required in extreme environments for sports lovers and adventure seekers alike. The story begins in 1881, when Kintaro Hattori founded a clock and watch shop in Ginza, Tokyo — the business that would become the Seiko of today. Since 1965, when Seiko created Japan's first diver's watch — the 62MAS — the Prospex dive line has stood for underwater precision and reliability. The HBC005J1 carries that sixty-year dive watch legacy and one hundred and forty-five years of brand heritage forward in the most specification-complete 145th Anniversary Prospex produced to date.

Backed by Seiko's official warranty. Authentic Seiko Prospex 145th Anniversary Limited Edition, sold by authorised retailer City Chain Singapore.

Explore the full Seiko Prospex Collection or browse all Seiko watches at City Chain Singapore.

Extra $20 OFF with min. $250 spend
Use Code: CC20

Extra $30 OFF with min. $300 spend
Use Code: CC30

Extra $40 OFF with min. $500 spend
Use Code: CC40

Movement
Caliber Number: 6R55
Movement Type: Automatic with manual winding
Precision: +25 to -15 seconds per day
Power reserve: Approx. 72 hours(3 days)
Jewels: 24

Functions
Stop second hand function

Case/Band
Case Material: Stainless steel
Case Size
Thickness:13.0mm
Diameter:40.0mm
Lug-to-lug:46.4mm
Crystal: Curved sapphire crystal
Crystal Coating: Anti-reflective coating on inner surface
LumiBrite on hands, index(es) and bezel
Three-fold clasp with secure lock & push button release, solid & slide adjuster
Distance between lugs: 20mm

Features
LIMITED EDITION on the case back
Unidirectional rotating bezel
Screw-down crown
Screw case back

Other Details
Water Resistance: 300m / 1000ft diver's
Magnetic Resistance: 4,800 A/m

Delivery within Singapore | Order by 11AM
(Checkout options may vary depending on minimum order requirements)

• Free Standard Delivery (3 business days)
• Free Next Day Delivery
• Express Delivery at $30 (order by 2PM)
• Click & Collect (ready in 2–3 business days)

Weekend & Public Holiday Orders
Orders placed during this time will be processed on the next business day.

For online purchase, you can have bracelet or leather strap adjustments done at any City Chain store. Please bring along your warranty book for the service.