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Astron. The world's first GPS solar watch.


In 2012, Seiko made history with Astron, the world's first GPS solar watch. Using just the power of light, Astron connects to four or more GPS satellites that orbit the earth, thus identifying its time zone and exact time at the location.


In 2014, Seiko took Astron even further with the introduction of a full-function GPS solar chronograph.