PROSPEX U.S. SPECIAL EDITION SPB421 21 with a 6-month power reserve

with a 6-month power reserve when fully charged

In bracing contrast to the updated angles of the case and bracelet

the newest Cocktail Time designs express the excitement of today's Tokyo

The 24-jewel automatic movement beats at a frequency of 21

while the screwdown crown and caseback

PROSPEX U.S. SPECIAL EDITION SPB421 21 with a 6-month power reserveProspex 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 re creating and re interpreting landmark achievements. Inspired by Seikos 1965 landmark first