SPB147 core_active combines a 30-jewel automatic movement

combines a 30-jewel automatic movement with the quartz regulator for accuracy to +/- 1 second per day

the black dial features a date calendar

" one of the most popular designs of the era

gloss finish and date calendar

and provides a power reserve of approximately 45 hours and manual winding capability

SPB147 core_active combines a 30-jewel automatic movement1965 Heritage Diver's Watch. 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 with re creations and re interpretations of landmark achievements. This versatile timepiece reimagines Seiko's 1965 first diver's watch, an