How does the GPS-Solar technology in the Seiko Astron work?
The watch that reinvents time, powered by light and connected to space
The Seiko Astron is a technological marvel that's literally connected to satellites in space and automatically adjusts itself to the local time, wherever you are. No batteries, no manual adjustment, just pure precision, powered by light. But how exactly does that work?
Seiko Astron SSH163J1
Light as an energy source
The power of the Seiko Astron begins with something mundane: light. Behind the dial lies an ultra-thin solar cell that captures any type of light, from bright sunlight to soft artificial light. This light is converted into energy and then stored in a rechargeable micro-battery , which lasts for months without additional light.
Even when the watch goes into power-saving mode , it continues to show the correct time for up to two years. No battery changes, no maintenance, only sustainable energy directly from the environment.
This also makes the Astron environmentally conscious : a forward-looking choice for those who appreciate technology but do not lose sight of sustainability.
Seiko Astron SSJ013J1
Connected to satellites around the world
The real magic of the Astron lies in its built-in GPS receiver . Under the bezel is a finely tuned loop antenna that connects to at least four satellites orbiting Earth. These satellites send data on longitude, latitude, and altitude to the watch.
Based on this information, the Astron automatically determines your time zone and adjusts itself within seconds. Your watch always knows exactly what time it is.
Seiko Astron SSH179J1
Smart automatic time adjustment
When the Seiko Astron detects sunlight, it connects to the GPS network. During this brief synchronization, the watch compares the received time data with its internal clock. It then adjusts itself to the nearest second.
Temporarily missing a signal, for example, inside a building or airplane? No problem. The Astron remembers the time of the last successful connection and automatically tries again as soon as there's light . That's what you call intelligence on your wrist.
Atomic clock precision in a titanium jacket
The Astron can adjust to forty time zones worldwide and maintains an accuracy of one second per 100,000 years . This precision is made possible by linking to atomic clocks via GPS signals , the same technology that aircraft navigation and space travel rely on.
Furthermore, each model is designed with comfort and style in mind. The lightweight titanium case not only provides a luxurious look but also improves GPS reception. Seiko thus combines top performance with elegance, a rare balance between innovation and refinement.
Seiko Astron SSH161J1
The future of precision available today
The Seiko Astron proves that the future of watches doesn't have to be digital, but can remain intelligently analog . No batteries, no time zones to set, no stress—just rely on the light that surrounds you every day.
Discover for yourself how this technology works and experience the power of light with the Seiko Astron .
Discover the Seiko Astron at Jeweler Van de Heyning
At Juwelier Van de Heyning, you'll find the Seiko Astron collection . Visit our store in Oud-Turnhout or explore the collection online. We're happy to help you find a watch that's just as forward-thinking as you are.