Prospex Solar 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. Protected by a scratch-resistant sapphire crystal, this handsomely tailored and superbly functional diver’s watch is equipped with an energy-efficient solar cell, powered by any light source, with no battery change required, that provides a 10-month power reserve when fully charged. Framed by a black uni-directional rotating elapsed timing bezel, the highly legible black dial includes a date calendar and LumiBrite hands and markers. Following ISO standards for scuba diving at depths of up to 200 meters, this exceptional timepiece, crafted of stainless steel with black hard coating, includes a tri-fold push button release clasp with secure lock and extender, and a screwdown crown and caseback. 200m Water Resistant