Seiko 5 Sports CollectionA tribute to Seiko's iconic "Time Sonar" of the 1970sTranslucent orange dial offering a view of the day/date diskAutomatic with manual winding capability21,600 vibrations per hourPower reserve: approximately 41 hours24 jewelsBi-color uni-directional rotating bezelLuminous hands and markersContrasting seconds hand accentScrewdown see-through casebackCase diameter: 42.5mmStainless steel case and braceletTri-fold push button release clasp with lockWater-resistant to 10 bar, 100 meters (330 feet)Caliber 4R36