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Astron is the first watch to automatically recognize all time zones on Earth.
The hands automatically adjust to the local time.
With the touch of a single button, Astron adjusts to the correct local time everywhere on the planet.*
Seiko Astron is accurate to one second every 100,000 years, thanks to the time signal it receives from the Atomic Clocks in each GPS satellite.
Astron never stops.
Astron receives all the power it needs from light absorbed through the dial. Not just sunlight, it is able to use all kinds of light, and store excess energy it produces in a power reserve whose charge level is indicated on the dial.