The world’s first GPS solar watch. By connecting to the GPS network, the Astron adjusts at the touch of a button to your time zone and, by taking all the energy it needs from light alone, never needs a battery change.

Astron Technology
Seiko Astron GPS Solar models accurately shows the time at your current location anywhere on Eearth. The watches are equipped with advanced movements that have undergone continuous evolution to accomplish the brand's mission of “pursuing absolute precision.”
The solar recharging system, which eliminates the need for regular battery replacement, and the use of lightweight, allergy-resistant titanium* provide the ultimate stress-free ownership experience.
*Some models do not use titanium.