SPB121 From the Prospex CollectionModern re-imagining of Seiko’s first sport watch, introduced in 1959Manual and automatic winding capabilities21,600 vibrations per hourPower reserve: approximately 70 hours24 jewelsRotating inner compass bezelGreen dial with sunray finish and gold accentsMagnified date windowLumiBrite hands and markersSapphire crystal with anti-reflective coating...