The first GPS solar watch in the world is called Astron by Seiko Watch Corporation. By connecting to the GPS network, the Astron adjusts to your time zone at the touch of a button and never requires a battery change because it gets all of its energy from light alone.
It connects to the GPS satellite and adjusts to your time zone at the touch of a button. The Seiko Astron GPS recognizes all 39 time zones on Earth, making it the finest watch of its type.
Because of the sturdy and scratch-resistant titanium used for the case and the bracelet, the watch is light and comfortable on the wrist; it is 40% lighter.