Seiko Prospex HBB001K1 – Diver’s Seiko 145th Anniversary Limited Edition

The Seiko Prospex HBB001K1 is a special limited edition celebrating Seiko's 145th anniversary. With its silver-white dial, two-tone aluminum bezel, and purposeful accents in Seiko Blue, it combines classic diver DNA with a modern, technical design language.

This model showcases the sportier interpretation of the Prospex line. The so-called "Slim Samurai" case design appears compact, angular, and dynamic. The stainless steel bracelet with beveled center links reinforces the clean lines and emphasizes the watch's robust yet modern character.

The silver dial ensures a fresh, uncluttered appearance. The blue seconds hand picks up on the current brand color, Seiko Blue, and adds a subtle but effective accent. The two-tone aluminum bezel in blue and silver-gray, specially developed for this model, gives the watch a distinctive, technical touch.

The HBB001K1 is powered by the proven Seiko automatic caliber 4R35. It offers automatic winding, a hacking seconds function, date, and a power reserve of approximately 41 hours. With 20 bar water resistance, a screw-down crown, a screw-down case back, and a secure folding clasp with push-buttons and a safety catch, this Prospex is consistently designed as a reliable diver's watch for everyday use.

The Seiko Prospex HBB001K1 is limited to 9,999 pieces worldwide.

Technical Highlights

– Limited Seiko Prospex Special Edition for the 145th Anniversary
– Reference: HBB001K1
– Automatic movement Seiko Caliber 4R35
– Hacking seconds function and date
– Bi-directional automatic winding
– Power reserve approx. 41 hours
– 23 jewels
– Frequency: 21,600 vibrations per hour
– Stainless steel case with screw-down case back
– Screw-down crown
– Unidirectional rotating stainless steel bezel with aluminum insert
– Bezel colors: Blue and silver-gray
– Silver dial with accents in Seiko Blue
– Hardlex glass
– 20 bar water resistant
– Stainless steel bracelet with secure folding clasp
– Not individually numbered
– Limited to 9,999 pieces worldwide

Dimensions

– Diameter: 41.7 mm
– Height: 12.25 mm
– Lug width: 20 mm
– Weight: approx. 170 g

Materials

– Case: Stainless steel
– Glass: Hardlex
– Bezel: Stainless steel with aluminum insert
– Bracelet: Stainless steel
– Clasp: Secure folding clasp with push-buttons and safety catch

Note

– Limited Edition for Seiko's 145th Anniversary
– Limited to 9,999 pieces worldwide
– Available from June 2026
– The watch is not individually numbered

User Manual (Download)
You can find the official Seiko user manual here:
Seiko Customer Service – Manuals

Shipping
– In stock, immediately available. Free shipping within Germany.