Reality The Demi Jett Black mw_grouped_product Level Up Learning Size:20D Level Up Learning Brand New Factory Sealed Complete Set Prospex Speedtimer Solar ChronographDesign inspired by Seiko's first precision chronographs developed for international sporting competitions in 1964Powered by light energy no battery change required6 month power reserve once fully chargedChronograph measures up to 60 minutes of elapsed time in 1 5 second increments with split time measurement functionWhite dial with sand blasted texture and black subdialsDate calendar24 hour subdialBeige LumiBrite hands and markersCurved sapphire crystal with anti reflective coating on the inner surfaceBlack tachymeter bezelScrewdown casebackCase diameter 39 0mmStainless steel case and braceletTri fold push button release claspWater resistant to 10 bar 100 meters Sleek and sustainably crafted Measurements: Lens (W) 65MM