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

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.
Case: W47 x D16.5mm
Face Shape
Manufacturer's Guarantee
2 years
Stainless steel
Strap Material
Rubber or silicone
Strap Style
Water Resistant
100m / 10ATM


Click & collect

Free Click & Collect from John Lewis and Waitrose shops for collection tomorrow from 2pm
262 participating John Lewis and Waitrose shops

Standard UK delivery within 5 working days


Next, named or Saturday UK delivery.


Next/named working day UK delivery pre-10.30am.


International delivery available

  • Europe (Non EU) - £7.50
  • Europe (EU) - £7.50
  • Rest of World - £25.00
Provided by JL Delivery Ltd - more about international delivery
From  £7.50

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Additional services

  • 2 year guarantee included

2  in stock