Seiko Prospex Automatic Heritage Diver’s Special Edition SPB455J1

Seiko Prospex - Modern reinterpretations of the legendary diver's watch from 1965

Historical innovation and continuous improvement

Since the release of the first diver's watch in 1965, Seiko has continuously developed new technologies, features, and designs that have been highly acclaimed by professional and sport divers worldwide. With over half a century of innovation, Seiko has steadily expanded the technology and applications of sports watches, especially diver's watches. Continuous improvements in safety, reliability, readability, and user-friendliness have made Seiko a leading manufacturer of diver's watches.

The history of Seiko: A century of innovation

Since Seiko's beginnings in 1881, the company has repeatedly introduced innovations, in line with the founder's philosophy: "Always one step ahead of the rest." In 1924, the company presented the first wristwatch with the Seiko logo on the dial, marking the start of the Seiko brand. The year 2024 thus marks the 100th anniversary of this groundbreaking event. To celebrate this anniversary, a third creation with an anthracite-colored dial will be introduced as a special edition.

The special edition features gold-colored accents that celebrate the anniversary year while also recalling the many advances in watchmaking brought about under the Seiko name.

Technical highlights

• Caliber: 6R55
• Drive type: Mechanical with automatic winding (manual winding possible)
• Accuracy: -15 to +25 seconds per day (static)
• Power reserve: Approximately 72 hours (3 days)
• Jewels: 24
• Case material: Stainless steel with Super-Hard-Coating
• Case size: Diameter 40.0 mm, length 46.4 mm, height 13.0 mm
• Glass: Double-domed sapphire crystal with anti-reflective coating on the inside
• Water resistance: 300 meters
• Clasp: Push-button clasp with opening on both sides
• Lug width: 20 mm

New Prospex creations: Modern reinterpretations from 1965

Seiko presents three new Prospex creations that are modern reinterpretations of the original Seiko diver's watch from 1965. These watches offer water resistance of 300 meters and an impressive power reserve of three days.

More performance, higher water resistance, and better readability

Each of the new watches is powered by Seiko's latest automatic movement, the Caliber 6R55, which offers a power reserve of 72 hours. These watches now ensure water resistance up to 300 meters—a first for Prospex diver's watches outside of saturation diving. The date window has been moved between four and five o'clock to allow for a more symmetrical design and to optimize readability in the dark. The index at 3 o'clock coated with LumiBrite also contributes to improved readability.

Compact design and high wearing comfort

The new models offer the reliability, safety, and easy handling expected from a Seiko diver's watch. With a case diameter