Seiko 5 Sports SKX Sports Style GMT SeriesDesign of the case and bracelet inspired by one of Seiko's best-loved sports watches, known to enthusiasts as the Seiko SKX seriesAutomatic GMT with manual winding capability21,600 vibrations per hourPower reserve: approximately 41 hours24 jewelsBlack and gray 24-hour GMT bezelBlack dialMagnified date calendarLuminous hands and markersLarge GMT hand for improved visibility and legibilityScrewdown see-through casebackCase diameter: 42.5mmStainless steel case and stylized five-row braceletTri-fold push button release clasp with lockWater-resistant to 10 bar, 100 meters (330 feet)Caliber 4R34