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Gent’s Astron Solar GPS Chronograph “Solidity” Titanium Limited Edition 1500 Piece – SSH113J1

This limited edition timepiece marks the 10 year anniversary of the world’s first GPS Solar watch created by Seiko and represents the “solidity” of its technological design; there are just 1,500 pieces of this design available worldwide.

Seiko Astron: the world’s first GPS solar watch – powered by light, automatically adjusted to your exact time through the latest GPS technology. This timepiece is named “Solidity” for the continuing relevance of its technological design.

This Astron Solar GPS watch features the 5X calibre with advanced functionality.

To enhance the speed and quality of the GPS connection, every component in the GPS module has been re-engineered. The operation of the 5X calibre is also faster and more intuitive than ever. For example, only three seconds are needed to advance 14 hours from Tokyo to New York time, thanks to the system that moves hour, minute, and second hand independently. The functions allow easy adjustment to Daylight Saving Time and give the wearer the ability to switch the main dial instantly from home to local time and vice versa. When a time zone adjustment is required, all it takes is a simple push of a button and the hands move faster than ever to the exact local time.

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±15 seconds per month (±1 second per day) without receiving a GPS signal and at temperatures between 5°C and 35°C
Movement Type:
GPS Solar
Power Reserve:
Operating for approx. 6 months (when fully charged)

Watch Case

Case Material:
Titanium (Super Hard Coating)
Case Thickness:
Case Diameter:
Case Length:
Lug Width:


Dial Colour:
Lumibrite on hands and indexes
Three-fold clasp with push button release

Other Specifications

Water Resistance:
Crystal Type:
Sapphire – Super-Clear Coating
Date Function:
Perpetual calendar until 28th February 2100
GPS Solar 5x

Model Number


  • Overcharge prevention function
  • Power save function
  • Perpetual calendar to the february 28, 2100
  • World time function (39 time zones)
  • Dual-time function
  • Day display
  • Power reserve indicator
  • Time transfer function (Switching between the main-dial and sub-dial)
  • GPS signal reception function (Time zone adjustment, automatic time adjustment)
  • Satellite acquisition status display function
  • Reception result display function
  • DST (Daylight Saving Time)
  • Function to prevent the gps signal reception function from working (in-flight mode)
  • Automatic hand position alignment function

At GL Ryan Jewellers we are passionate about time.
From subtle and elegant watches to the unusual and bespoke novelty Swiss watches.
We have a wide range of exclusive limited edition watches, Swiss luxury to our boutique selection and everything in between.
We are proud to be stockists of Seiko, which we are a Seiko Boutique, Citizen, Bulova, G-Shock, and Swiss brands Roamer and Frederique Constant.

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