Seiko Prospex Celebrates 145 Years with Two Limited Edition Dive Watches Featuring Seiko Blue Accents
Two contrasting interpretations of Seiko’s diving heritage, defined by functional design and distinctive blue bezel detailing.
Seiko Prospex 145th Anniversary with two new limited-edition Prospex dive watches, each featuring a distinctive blue bezel accent that pays tribute to the brand’s heritage and its iconic Seiko Blue identity.
Founded in 1881 by Kintaro Hattori in Tokyo’s Ginza district, Seiko has built a legacy defined by innovation and precision. From producing Japan’s first wristwatch in 1913 to pioneering milestones such as the country’s first chronograph, its first dive watch, and the revolutionary Quartz Astron in 1969, Seiko has consistently shaped modern horology through technological evolution.
The 1960s also introduced Seiko Blue, a signature colour that has since become a lasting symbol of the brand’s pioneering spirit.
A Heritage Diver Reimagined from 1965
The first model in this anniversary Prospex release is inspired by Seiko’s historic 1965 diver, a cornerstone of the brand’s diving heritage and one of the most important early professional dive watches from Japan.
Powered by the automatic Calibre 6R55, this model combines historical design language with modern performance standards. It offers water resistance up to 300 metres, making it suitable for professional scuba diving, alongside a robust 72-hour power reserve.
The design features a silver-white dial with excellent legibility, paired with blue accents on the aluminium bezel insert and seconds hand, directly referencing Seiko Blue.
A key functional highlight is the bracelet’s fine-adjustment system, allowing up to 15 mm of extension in six 2.5 mm increments, ensuring a secure and comfortable fit even under changing pressure conditions underwater.
A Sculptural Samurai-Inspired Dive Watch
The second limited edition is powered by the automatic Calibre 4R35 and introduces a more aggressive and sculptural design language.
Its case architecture features sharply faceted surfaces inspired by the iconic Seiko diver nicknamed “Samurai” by fans, reflecting a blade-like geometric aesthetic that enhances its strong wrist presence.
This model is distinguished by a bi-colour bezel insert, with the first 15 minutes highlighted in grey and the remaining scale in blue, reinforcing both functionality and visual identity.
The dial, hands, and indices follow a similarly angular design approach, creating a cohesive and bold diver aesthetic. With water resistance up to 200 metres, it remains a capable tool watch for recreational diving and everyday use.
Two Interpretations of the Same Diving Legacy
While both watches share the same commemorative purpose, they represent two different expressions of Seiko’s diving heritage.
The 1965-inspired model (Seiko Prospex Diver’s: HBB005) focuses on historical authenticity and professional-grade functionality, while the Samurai-inspired edition (Seiko Prospex Diver’s: HBB001) emphasizes modern design expression and sculptural form.
Together, they highlight the evolution of Seiko Prospex as a collection built on reliability, innovation, and a deep connection to the ocean.
Both models will be released as limited editions in June 2026.
Technical Specifications
| Case Material | Stainless steel with super-hard coating |
| Case Diameter | 40 mm |
| Thickness | 13 mm |
| Water Resistance | 300 meters / Diver’s certified |
| Dial | Silver-white dial with Seiko Blue accents |
| Crystal | Curved sapphire crystal with anti-reflective coating (inner surface) |
| Bezel | Unidirectional rotating bezel with aluminium insert and blue accents |
| Bracelet | Stainless steel with diver extension clasp (15 mm micro-adjustment system) |
| Movement | Automatic |
| Calibre | Seiko Calibre 6R55 |
| Power Reserve | Approximately 72 hours |
| Frequency | 21,600 vph (3 Hz) |
| Magnetic Resistance | 4,800 A/m |
| Functions | Hours, minutes, central seconds |
| Limited edition | 4,000 pieces |
| Price | €1.600 |
Technical Specifications
| Case Material | Stainless steel |
| Case Diameter | 41.7 mm |
| Thickness | 12.3 mm |
| Water Resistance | 200 m (diver’s standard) |
| Dial | Black textured dial with bold applied markers |
| Crystal | Hardlex crystal |
| Bezel | Unidirectional diver’s bezel with bi-color insert (grey 0–15 min / blue remainder) |
| Bracelet | Stainless steel bracelet |
| Movement | Automatic |
| Calibre | Seiko Calibre 4R35 |
| Power Reserve | 41 hours |
| Frequency | 21,600 vph (3 Hz) |
| Magnetic Resistance | 4,800 A/m |
| Functions | Hours, minutes, central seconds, date |
| Limited edition | 9,999 pieces |
| Price | €675 |
A Modern Celebration of Seiko Prospex Heritage
With these two limited editions, Seiko Prospex continues to reinforce its position as one of the most respected dive watch collections in the industry.
Blending historical inspiration with modern engineering and distinctive design, these releases reflect two complementary visions of Seiko’s diving legacy: technical precision and bold aesthetic evolution.
More than anniversary pieces, they represent the enduring spirit of innovation that defines Seiko’s approach to watchmaking.
For more information, please visit the official Seiko website.
Explore the releases of Watches & Wonders 2026.
