Seiko Prospex Speedtimer Solar Chronograph Mens Watch SSC813 Seiko Prospex Speedtimer Solar Chronograph Mens Watch SSC813 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 (330 feet)Caliber V192 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 (330 feet)Caliber V192 Seiko Prospex Speedtimer Solar Chronograph Mens Watch SSC813 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 (330 feet)Caliber V192 Prospex Speedtimer Solar Chronograph Design inspired by Seiko's first precision chronographs, developed for international sporting competitions in 1964 Powered by light energy - no battery change required 6-month power reserve once fully charged Chronograph measures up to 60 minutes of elapsed time in 1/5-second increments with split time measurement function White dial with sand-blasted texture and black subdials Date calendar 24-hour subdial Beige LumiBrite hands and markers Curved sapphire crystal with anti-reflective coating on the inner surface Black tachymeter bezel Screwdown caseback Case diameter: 39.0mm Stainless steel case and bracelet Tri-fold push button release clasp Water-resistant to 10 bar, 100 meters (330 feet) Caliber V192 integration by