Seiko Astron Watch -SAST007G

GPS Solar Watch Seiko Astron Watch SAST007G. Seiko Astron timepieces are zone-sensitive. The hunt for perfectly accurate time, anywhere in the world, is finally done. Seiko was able to produce a watch that can receive GPS signals and use the global network of GPS satellites to detect time zone, date, and other data by creating our own, patented, low-power consumption GPS receiver. It is aware of all 39 of the planet's time zones.