The Astron name first appeared in 1969 with the Seiko Quartz Astron, the world's first quartz wristwatch. In 2012, Seiko introduced the world's first production GPS Solar watch under the Astron name, creating a watch that could connect to GPS satellites while generating the energy required for operation from light.

Today's Seiko Astron continues this legacy through GPS Solar technology designed around precision, convenience and global travel.

How Does Seiko Astron GPS Solar Work?

Seiko Astron uses GPS satellite signals to adjust its time.

When performing time-zone adjustment, compatible Astron models can determine the appropriate local time zone and adjust the watch accordingly. This is particularly useful when travelling between countries and time zones.

Astron is also solar powered, converting light into electrical energy and reducing the need for periodic battery replacement.

When fully charged, current GPS Solar models can operate for approximately six months under normal conditions, depending on the calibre.

GPS Time Adjustment for Global Travel

One of the defining features of Seiko Astron is its ability to adjust time using the GPS network.

Current Astron 3X and 5X movements can perform high-speed time-zone adjustment, allowing the watch to move to the appropriate local time when travelling.

When successfully synchronised with GPS signals, Astron receives highly precise satellite-based time information.

For business travellers, frequent flyers and customers who regularly move between time zones, this provides the convenience of advanced time adjustment in a traditional analogue wristwatch.

Seiko Astron 5X GPS Solar

The Seiko Astron 5X Series offers some of the collection's most advanced GPS Solar functions.

Depending on the model, features can include:

• GPS time and time-zone adjustment
• Dual-time display
• Time Transfer between home and destination time
• World-time functions
• Perpetual calendar
• Chronograph functions
• Solar charging

The Time Transfer function on compatible 5X models allows the wearer to switch the displays of home and destination time between the main dial and sub-dial, making it particularly useful for international travel.

Seiko Astron 3X GPS Solar

The Seiko Astron 3X Series offers a streamlined expression of GPS Solar technology.

Its more simplified dial configuration combines satellite time adjustment and solar power with contemporary Astron styling.

For customers who want Astron's core GPS Solar technology without the additional complications of selected 5X models, the 3X Series offers a cleaner alternative.

Seiko Astron GPS Solar Chronograph

Selected Seiko Astron chronograph watches combine GPS Solar technology with sports-inspired chronograph functionality.

Depending on the calibre, functions can include dual time, world time, a perpetual calendar and high-precision chronograph measurement.

These models combine advanced electronic watchmaking with the appearance and functionality of a high-specification analogue sports watch.

Lightweight Titanium Construction

Titanium is widely used across the current Seiko Astron collection.

Its lightweight character makes it particularly suitable for larger, highly functional watches designed for extended wear and travel.

Selected Astron models also feature Seiko's surface-hardening treatments, ceramic components and sapphire crystal.

Materials and specifications vary by model, so refer to each individual product page when selecting your watch.

Powered by Light

Astron GPS Solar watches generate the electricity required for operation from light.

Once charged, current models can continue operating for extended periods without exposure to light. Selected calibres also feature a power-save mode designed to reduce energy consumption when the watch is stored in darkness.

For the wearer, this combines advanced electronic functionality with convenient everyday ownership.

From Quartz Astron to GPS Solar

The Astron story connects two important milestones in Seiko's history.

In 1969, Seiko introduced the original Quartz Astron, marking a major development in quartz wristwatch technology.

In 2012, the Astron name returned with Seiko's first GPS Solar generation, combining satellite-based time adjustment with solar power.

Modern Astron watches continue that pursuit of precision through increasingly compact movements, advanced functions and contemporary design.

Who Is Seiko Astron For?

Seiko Astron is particularly suited to customers who value advanced technology within a traditional analogue watch.

Choose Astron if you:

• Travel frequently between time zones
• Want GPS-adjusted timekeeping
• Prefer solar power and reduced battery maintenance
• Appreciate lightweight titanium watches
• Want advanced technology without wearing a smartwatch
• Prefer dual-time and world-time functionality for international travel

Seiko Astron Limited Editions

The Astron collection regularly includes limited-edition watches with distinctive dial treatments, colours and design concepts.

These models combine Astron's GPS Solar technology with more expressive designs, offering an alternative for collectors and customers looking for something less conventional within the collection.

Availability varies, so browse the current City Chain Astron collection for the latest models.

Shop Seiko Astron Watches in Singapore

Explore Seiko Astron watches in Singapore at City Chain.

Shop GPS Solar watches featuring advanced time-zone adjustment, solar power, titanium construction, dual-time displays, chronograph functions and selected limited editions.

Browse the collection online or visit City Chain stores in Singapore to discover Seiko Astron in person.

Frequently Asked Questions

What is Seiko Astron?

Seiko Astron is Seiko's advanced GPS Solar watch collection. Current models use satellite signals for precise time adjustment while generating the electrical energy required for operation from light.

What is GPS Solar?

GPS Solar combines GPS satellite reception with solar-powered operation. Compatible Astron watches can use GPS signals to adjust their time and time zone while charging from light.

Does Seiko Astron require a battery change?

Astron GPS Solar watches use a rechargeable power cell charged by light and do not require the periodic battery replacement associated with conventional battery-powered quartz watches.

Does Seiko Astron automatically change time zones?

Compatible Astron models can perform GPS time-zone adjustment to determine and display the appropriate local time. The exact operation and functions vary depending on the calibre.

How accurate is Seiko Astron?

When successfully synchronised with GPS signals, Astron receives highly precise satellite-based time information. Without GPS reception, accuracy depends on the individual quartz calibre and should be checked in the model specifications.

What is the difference between Seiko Astron 3X and 5X?

The 3X family focuses on Astron's core GPS Solar functionality in a streamlined configuration, while 5X movements add functions on selected models such as dual time, Time Transfer and chronograph features.

Is Seiko Astron solar powered?

Yes. Current Seiko Astron watches use GPS Solar technology and generate the electricity needed for operation from light.

Are Seiko Astron watches made from titanium?

Many Astron watches use titanium, but materials vary between models. Check the individual watch specifications for its case and bracelet materials.

Is Seiko Astron suitable for travelling?

Yes. GPS time-zone adjustment, dual-time functionality on selected models and solar charging make Astron particularly suited to frequent international travellers.

Where can I buy Seiko Astron watches in Singapore?

Seiko Astron GPS Solar watches are available from City Chain Singapore online and at selected City Chain stores. Browse the collection to check current models and availability.