Prospex Special Edition Automatic Diver. Designed for those who treat life as the ultimate adventure, the Seiko Prospex line follows 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. The 24-jewel automatic movement beats at a frequency of 21,600 vibrations per hour, with a power reserve of approximately 41 hours, and can be wound manually or automatically. In stainless steel, with blue ceramic one-way rotating elapsed timing bezel, secure screwdown crown and caseback, and durable black silicone strap, this high-intensity watch follows ISO standards for scuba diving. 200m Water Resistant.