Prospex Speedtimer Solar Chronograph Limited EditionLimited Edition of 10,000Design inspired by Seiko's 1969 Speedtimer, the world's first self-winding chronographPowered 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 functionPale blue dial with sunray finishDate calendar24-hour subdialLumiBrite hands and markersCurved sapphire crystal with anti-reflective coating on the inner surfaceBlack tachymeter bezelScrewdown casebackCase diameter: 39.0mmStainless steel case and bracelet with gray inner links with a hard coatingTri-fold push button release claspWater-resistant to 10 bar, 100 meters (330 feet)Caliber V192