Prospex Solar GMT Diver's Watch Powered by light energy - no battery change required 9-month power reserve once fully charged Light blue uni-directional rotating elapsed timing bezel Light blue sunray dial Orange GMT 24-hour hand Date calendar LumiBrite hands and markers Sapphire crystal Screwdown crown and caseback Case diameter: 45.0mm Stainless steel case and bracelet Tri-fold push button release clasp with secure lock and extender Water-resistant to 200 meters (660 feet), Diver's Watch. Follows ISO standards and is suitable for scuba diving Caliber 5K65
