Prospex Solar GMT Diver's Watch. Designed for those who treat life as the ultimate adventure, Seiko Prospex keeps moving forward, meeting every challenge with technological excellence and winning design. Combining Seiko's first solar GMT movement with the bold lines of an iconic Prospex design, this strong and rugged diver's watch features an energy-efficient solar cell, powered by any light source, with no battery change required, providing a 9-month power reserve when fully charged. Designed for high visibility, the deep green sunray dial offers large LumiBrite hands and markers, an orange GMT hand and a date calendar. Following ISO standards for scuba diving at depths of up to 200 meters, this exceptional timepiece, crafted of stainless steel, includes a scratch-resistant sapphire crystal, green uni-directional rotating elapsed timing bezel, tri-fold push button release clasp with secure lock and extender, and screwdown crown and caseback. 200m Water Resistant