Seiko Prospex SPB421 U.S. Special Edition 62MAS Blue Dial Bulova Oceanographer Devil Diver Limited Edition Accuracy: Accuracy of ±1 second

Accuracy: Accuracy of ±1 second per year

The modern design with a rugged edge features a black ion-plated stainless steel case and dark gray and black dial with green accents that showcases the 5-hand chronograph movement and calendar on a matte black silicone strap

Carbon reinforced unidirectional ratcheting bezel

Caseback: Exhibition

This makes it easy to keep tabs on the natural environment around you and to maintain logs of your activities for comprehensive flight mission support

Seiko Prospex SPB421 U.S. Special Edition 62MAS Blue Dial Bulova Oceanographer Devil Diver Limited Edition Accuracy: Accuracy of ±1 secondProspex U. S. Special Edition. Designed for those who treat life as the ultimate adventure, the Seiko Prospex line meets every challenge with technological excellence and style. Part of a rich legacy of innovation in high intensity timekeeping, Prospex continues to celebrate a long history of sports watch excellence, leading the way with new advances, while recreating and reinterpreting landmark achievements. Inspired by Seiko's 1965 landmark first