SEIKO Prospex U.S. Special Edition SRPH57 Mens 600 vibrations per hourPower reserve:

600 vibrations per hourPower reserve: approximately 41 hours23 jewelsBlue sunray dialDate calendarScrewdown see-through casebackCase diameter: 41

Luminous hands and hour markers

and a date calendar complication

It boasts extreme precision and a power reserve of up to 72 hours

SEIKO Prospex U.S. Special Edition SRPH57 Mens 600 vibrations per hourPower reserve:Celebrates Seiko Prospex's ongoing efforts to promote ocean exploration and conservationAutomatic diver with manual winding capability21,600 vibrations per hourPower reserve: approximately 41 hours24 jewelsBlack ceramic unidirectional rotating elapsed timing bezelIntricately patterned turquoise dial inspired by the turtle shellDay date calendar with day in both English and KanjiLumiBrite hands and markersSapphire crystal with anti reflective coating