Seiko Astron GPS Solar Chronograph SSE023 

Caliber Specifications:
8X82, GPS Solar Chronograph
GPS controlled time and time zone adjustment
Chronograph up to 6 hours in 1/5 second increments
Perpetual calendar correct to the year 2100, Signal reception result indication
World time function (40 Time Zones), Daylight Saving Time function, Power save function
Accuracy: +/-15 seconds per month (without receiving a time signal and at temperatures
between 5䋀 and 35䋀)

Case Diameter: Diameter 44.6mm, Thickness 13.3mm
Titanium with super-hard coating, Rose Gold Coating with ceramic bezel

Water resistance: 10 Bar, Magnetic resistance 4,800 A/m

Band: Black Crocodile Leather Strap with three-fold clasp with push button release

Glass: Sapphire crystal with super-clear coating