Seiko Astron SAST0011G Men's Stainless Steel GPS Solar Watch, Black

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Product information

A world first from Seiko, Astron is an innovative men's watch which can adjust to the local time anywhere on the planet, in all currently recognised 39 time zones, with the press of a button. Accurate to one second every 100,000 years, the watch receives a constantly updated time signal from the Atomic Clocks housed in each GPS satellite. This signal is received even when the wearer is moving - provided you can see the sky, you know the time displayed will be absolutely accurate. The watch receives all the power it needs to keep running from light absorbed through the dial. A reserve indicator shows the amount of solar power stored in the watch. Astron also has a Perpetual calendar which automatically corrects the date, and will be accurate until February 28th 2100. A date window sits at the 3 o'clock position. The case is stainless steel with a dark coating, while strap is a rugged Silicone band. The dial is scratch resistant sapphire crystal, with Seiko's proprietary new Super-Clear Coating. This anti-reflective coating has been applied to the front and back of the glass, preventing 99% of reflection and allowing the dial to be legible even in direct sunlight.
Seiko Astron
Case: W47 x D16.5mm
Face Shape
Manufacturer's Guarantee
2 years
Stainless steel
Strap Material
Rubber or silicone
Strap Style
Water Resistant


Click & collect

Free from John Lewis or Waitrose shops for collection Friday from 2pm
369 participating John Lewis and Waitrose shops

Collect + from a local shop from Friday - postcode exclusions apply for Collect+ deliveries

5000+ participating Collect+ shops

Standard delivery in 5 working days


Named or Saturday UK delivery


Named day UK delivery pre-10.30am


International delivery available

  • Europe (Non EU) - £7.50
  • Europe (EU) - £7.50
  • Rest of World - £10.00
  • Australia - £10.00
Provided by JL Delivery Ltd - more about international delivery

We want you to be happy with your purchase. If you're not, depending on the type of product, you can make free returns in the UK via John Lewis shops, Royal Mail, Collect+, or MyHermes. If you need to arrange collection of large or heavy items, call us on 03456 049 049. For international returns queries, call us on +44 1698 545 454. Find out more about returns.

You'll find returns information on your delivery note. Unless faulty, we'd like you to make your return within 90 days of purchase. Exceptions apply to certain products - find out more about our refund policy.


Find out more about returning products

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Additional services

  • 2 year guarantee included

2  in stock