Limited Edition of 3,500 pieces - number engraved on caseback. GPS Solar World Time. GPS controlled time and time zone adjustment (40 Time Zones). Magnetic resistance 4,800A/m. Perpetual date calendar correct to the year 2100. Signal reception result indication. Daylight savings time function. Power save function. Sapphire glass with Seiko's proprietary super clear, anti-reflective coating. Tri-fold push button release clasp. LumiBrite hands and markers. Screwdown caseback. Case Diameter: 45.0mm. Water-resistant to 10 bar, 100 meters (330 feet). Black Ceramic Bezel. Mother-of-pearl Dial. Titanium Case with super hard black coating. Ceramic and Titanium Bracelet with super hard black coating.