Seiko Prospex Baby Tuna Automatic SRP641AUTHORIZED DEALER 3 YEAR WARRANTY AutomaticDiverSelf and automatic winding capabilities21,600 vibrations per hourPower reserve: approximately 41 hours24 JewelsDay/Date calendarScrewdown crown and casebackOne way rotating elapsed timing bezelLumiBrite hands and markers200M water resistantCaliber 4R36Black Ion FinishPolyurethane strap