The Seiko Prospex SPB501J1 is a PADI Special Edition of the 1965 Heritage Diver, combining the proportions and design language of Seiko's historic dive watches with modern specifications. Its distinctive emerald-green gradient dial is inspired by shimmering light and the rippling surface of the ocean as viewed from underwater.

The stainless steel case measures 40mm in diameter, 46.4mm lug-to-lug and 13mm thick. Power comes from Seiko's automatic Calibre 6R55, offering approximately 72 hours of power reserve. A curved sapphire crystal with internal anti-reflective coating and 300 meters of water resistance complete the modern dive-watch specification.

This 2026 example comes as a complete set and is in excellent pre-owned condition. The bracelet accommodates wrists up to approximately 8.75 inches.

Model: Seiko Prospex 1965 Heritage Diver PADI Special Edition
Reference: SPB501J1
Year: 2026
Case Size: 40mm
Lug-to-Lug: 46.4mm
Case Thickness: 13mm
Case Material: Stainless Steel
Movement: Seiko Calibre 6R55 Automatic with Manual Winding
Power Reserve: Approximately 72 Hours
Crystal: Curved Sapphire with Internal Anti-Reflective Coating
Dial: Emerald-Green Gradient
Bezel: Unidirectional Rotating Dive Bezel
Water Resistance: 300m
Bracelet: Stainless Steel
Wrist Fit: Up to Approximately 8.75 Inches
Includes: Complete Set
Condition: Excellent Pre-Owned Condition