Seiko Astron, the World?s First Solar GPS Watch

In 1969, Seiko introduced the first quartz watch, and now they are introducing the world’s first solar GPS watch.� Using their own, patented, low-energy-consumption GPS receiver, the Astron is able to recognize all 39 time zones around the world to identify time zone and set the time and date data using the global network of [...]

Source: http://the-gadgeteer.com/2012/03/18/seiko-astron-the-worlds-first-solar-gps-watch/

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