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 Black 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
