Prospex Black Series Limited EditionLimited Edition of 7,000Production serial number engraved on casebackDesigned for rugged activitiesEmergency code listing on screwdown casebackAutomatic with manual winding capability21,600 vibrations per hourPower reserve: approximately 41 hours23 jewelsBlack rotating compass bezelMatte gray dial reduces reflection and maximizes visibilityBright green LumiBrite, newly developed for improved night visibility, on hands and markersDate calendarSapphire crystalScrewdown crownCase diameter: 42.4mmStainless steel case with black hard coatingBlack fabric/leather hybrid strapWater-resistant to 20 bar, 200 meters (660 feet)Caliber 4R35