Prospex Save the Ocean Special EditionSpecial Edition celebrating Antarctic conservation effortsGradient blue-green dial evoking the icy seas, with die-stamped patterning to suggest penguin footprints in the snowAutomatic diver with manual winding capability21,600 vibrations per hourPower reserve: approximately 41 hours24 jewelsBold, grooved uni-directional rotating elapsed timing bezel inspired by a classic Prospex designMagnified day/date calendarLumiBrite hands and markersScrewdown crown and casebackCase diameter: 42.4mmStainless steel case and braceletTri-fold push button release clasp with secure lock and extenderWater-resistant to 200 meters (660 feet), Diver's Watch. Follows ISO standards and is suitable for scuba divingCaliber 4R36