Seiko 5 Sports CollectionInspired by vintage field/military styleAutomatic with manual winding capability21,600 vibrations per hourPower reserve: approximately 41 hours24 jewelsBlack dialDay/date calendarLuminous hands and markersRed-orange tipped second handScrewdown see-through casebackCase diameter: 39.4mmStainless steel case and braceletWater-resistant to 10 bar, 100 meters (330 feetCaliber 4R36