Seiko Prospex Automatic Heritage Diver’s SPB453J1

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

New Prospex creations: Modern reinterpretations of 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.

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

More power, 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 a more symmetrical design and 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 reliability, safety, and easy handling that are required from a Seiko diver's watch. With a case diameter of 40.0 mm, a length of 46.4 mm from lug to lug, and a thickness of 13.0 mm, these watches offer compact dimensions and excellent wearing comfort for everyday use. A new bracelet with shorter links and a smaller clasp allows precise adjustment of the watch to the wearer's wrist and provides additional comfort. The short lugs also ensure a high level of comfort on the wrist.