Seiko SSJ039J1

Astron | Astron GPS Solar 5X | Limited Edition | Men's

Seiko Astron GPS Solar ‘Spiral Galaxy’ Limited Edition

£2,100

This item will be released January 5, 2026.
Limited Edition of 1,500 Pieces Worldwide
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This watch will be available in January

Description

This Astron solar-powered timepiece is themed ‘Solidity,’ symbolising Seiko’s innovative spirit, present since the brand’s beginnings in 1881. Within a series taking inspiration from the solar system, this piece is inspired specifically by Earth.
There are just 1,500 pieces of this limited edition available worldwide, with very few in the UK.

Crafted in a super-hard 41.22mm titanium case with sapphire crystal glass, the distinctive ‘spiral galaxy’ dial pattern in dark turquoise blue is particularly difficult to create on a solar cell whilst maintaining its charge efficiency. This limited edition watch showcases a curved pattern within an all-black case accompanied by a ceramic bezel, like a galaxy in space. The dial features a glittered effect, depicting bright stars. This model has a contemporary feel, with sleek lines, slim profile, and compact, angular design and an almost seamless flow from the case, through the lugs and to the bracelet. The centre links have a mirror-effect and the micro-adjustable clasp feature adds a personalised fit.

The watch is powered by an in-house built 3X62 Solar-powered movement with GPS functionality for exceptional accuracy – being updated remotely by GPS satellite when the wearer moves between time zones. It can be charged by any light source – either natural sunlight or artificial light – for convenience.

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

Specifications

Movement
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
Exterior
Dial Colour: Blue
LumiBrite: Lumibrite on hands and indexes
Case Material: Titanium (super-hard coating)
Strap/Bracelet: Titanium (super-hard coating)
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 to the february 28, 2100, Power reserve indicator, Power save function, Reception result display function, Satellite acquisition status display function
Magnetic Resistance: 4,800 A/m

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