Prospex Special Edition Solar Chronograph Diver. Designed for those who treat life as the ultimate adventure, the Seiko Prospex line meets every challenge with technological excellence and style. Crafted of stainless steel with dark gray ion finish and durable silicone strap, this Special Edition is anchored by a gradient blue one way rotating elapsed timing bezel and wave-patterned blue dial with three subdials, date calendar, and LumiBrite hands and markers. Offering chronograph timing to 60 minutes in 1/5-second increments with a split time measurement function, this superbly engineered timepiece also provides a 24-hour time display on the 3 oclock subdial. The energy-efficient Solar Cell, powered by any light source, with no battery change required, provides a 6-month power reserve when fully charged. Including a secure screwdown crown and caseback, this high-intensity watch meets ISO standards for scuba diving. 200m Water Resistant.