Prospex Special Edition Automatic Diver. Designed for those who treat life as the ultimate adventure, the Seiko Prospex line meets every challenge with technological excellence and winning design. With a dramatic ocean blue dial patterned to suggest a great white shark fin, this rugged, yet distinctive, timepiece upgrades an iconic style with a ceramic bezel and a sapphire crystal with anti-reflective coating on the inner surface. LumiBrite hands and markers, and a magnified day/date window ensure legibility in rough conditions.