Astron ‘Starfull Sky’ 3X GPS Solar Limited Edition


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Astron was created from Seiko’s passion for innovation, and now, under the theme of ‘Solidity,’ a series of solar timepieces have been created for the future of innovation.

The dial of this timepiece features a stamped star-shaped pattern – a process difficult to achieve on a dial with a solar cell. In a light blue colour, the dial aims to portray the glow of the stars in the night sky. Under a sapphire crystal glass, the hands and indices are coated with a layer of Lumibrite for legibility in the dark. The case has a modern polygonal case shape, made from lightweight titanium, with a super-hard coating.

This 3X62 calibre has solar GPS functionality, allowing for instantaneous and accurate changing of the time, no matter where you are in the world. Whereas with other solar watches, the dial is restricted by the need for maximum visibility of the solar cells and so decoration must be minimal, this movement is highly energy-efficient, allowing for colours and textures on the dial.

Seiko Astron: the world’s first GPS solar watch – powered by light, automatically adjusted to your exact time through the latest satellite technology.

* In the actual watch, the case back direction may differ from the photograph.


Accuracy: ±15 seconds per month (without receiving a GPS signal and at temperatures between 5°C and 35°C )
Calibre: 3X62
Movement Type: GPS Solar
Power Reserve: Operating for approx. 6 months (when fully charged), power save: approx. 2 years
Jewels: 10
Dial Colour: Blue
LumiBrite: Lumibrite on hands and indexes
Case Material: Titanium (Super Hard Coating)
Strap/Bracelet: Titanium
Clasp: Three-fold clasp with push button release
Case Diameter: 41.2mm
Case Thickness: 12.0mm
Case Length: 48.6mm
Lug Width: 14.0mm
Other Specifications
Water Resistance: 10 bar
Weight: 110.0g
Crystal Coating: Super-Clear Coating
Crystal Type: Sapphire crystal
Other Specifications: LIMITED EDITION on the case back, Screw case back, Serial number engraved on the case back, Allergy-safe metal, Clasp with Smart Adjuster function
Watch Function: Automatic hand position alignment function, Date display, Function to prevent the GPS signal reception (in-flight mode), GPS signal reception function (Time zone adjustment, automatic time adjustment, manual time adjustment), Overcharge prevention function, Perpetual calendar until February 28, 2100, Power reserve indicator, Power save function, Reception result display function, Satellite acquisition status display function

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