Seiko Prospex HBC005J1 – 145th Anniversary Limited Edition – Automatic Diver's 300 m

The Seiko Prospex HBC005J1 is a limited special edition celebrating Seiko's 145th anniversary. With its silver-white dial, blue aluminum bezel, and deliberate accents in Seiko Blue, it combines classic Seiko Diver DNA with a modern, high-quality execution.

This model is based on the legendary 1965 Diver's Watch, translating its clear, functional lines into a contemporary Prospex interpretation. The case appears sporty, robust, and at the same time pleasantly understated. The compact proportions, stainless steel bracelet, and classic diver look create a watch that convinces both as a functional diver's watch and as a high-quality everyday companion.

The silver-white dial ensures a clear, fresh appearance. The blue accents pick up on the current brand color, Seiko Blue, visually anchoring the watch in the anniversary concept. The blue aluminum bezel emphasizes the watch's maritime character and creates a striking contrast to the bright dial.

The HBC005J1 is powered by the Seiko Automatic Caliber 6R55. It offers automatic winding, manual winding capability, hacking seconds, date display, and a power reserve of more than 72 hours. With 30 bar water resistance, a screw-down crown, a screw-down case back, anti-reflective sapphire crystal, and a folding clasp with a diving extension, this Prospex is consistently designed as a high-quality Diver's Watch.

The Seiko Prospex HBC005J1 is limited to 4,000 pieces worldwide.

Technical Highlights

– Limited Seiko Prospex special edition for the 145th anniversary
– Reference: HBC005J1
– Automatic movement Seiko Caliber 6R55
– Hacking seconds function and date
– Manual winding capability
– Bi-directional automatic winding with Magic Lever
– Power reserve of more than 72 hours
– 24 jewels
– Stainless steel case with hard coating
– Screw-down case back
– Screw-down crown
– Uni-directional rotating bezel made of stainless steel with aluminum insert
– Blue aluminum bezel
– Silver-white dial with accents in Seiko Blue
– Domed and anti-reflective sapphire crystal
– LumiBrite on hands and indices
– 30 bar water resistant / 300 m Diver’s
– Stainless steel bracelet with hard coating
– Folding clasp with security pushers and buckle
– Bracelet with diving extension
– Not individually numbered
– Limited to 4,000 pieces worldwide

Dimensions

– Diameter: 40.0 mm
– Height: 13.0 mm
– Lug-to-lug length: 46.4 mm

Materials

– Case: Stainless steel with hard coating
– Crystal: Domed and anti-reflective sapphire crystal
– Bezel: Stainless steel with aluminum insert
– Bracelet: Stainless steel with hard coating
– Clasp: Folding clasp with security pushers, buckle, and diving extension

Note

– Limited edition for Seiko's 145th anniversary
– Limited to 4,000 pieces worldwide
– Available from June 2026
– The watch is not individually numbered

Instruction Manual (Download)
You can find the official Seiko instruction manual here:
Seiko Customer Service – Instructions

Shipping
– In stock, ready for immediate delivery. Free shipping within Germany.