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 hours23 jewelsUni-directional rotating elapsed timing bezelDate calendarLumiBrite hands and markersScrewdown crown and casebackCase diameter: 43.2mmStainless steel caseBlue-green silicone strapWater-resistant to 200 meters (660 feet), Diver's Watch. Follows ISO standards and is suitable for scuba divingCaliber 4R35