Seiko welcomes two Astron GPS Solar 2024 Limited Edition models

June 2024

Seiko welcomes two Astron GPS Solar 2024 Limited Edition models

Two new creations inspired by the starry sky at night join the collection. The powerful and beautiful brilliance of the stars twinkling in the vast night sky is expressed in the light blue dials, whose star motif patterns change their expression depending on the angle of view.


he infinite radiance of the starry sky is captured in these two new watches. The transparent light-blue moulded dial evokes its power and beauty, with the appearance changing depending on the angle of view.

The watches ensure a high level of comfort and legibility thanks to a titanium case with a low centre of gravity and a dual-curved sapphire crystal with a super-clear coating.

Both watches are offered as limited editions of 1,500 each.

Seiko welcomes two Astron GPS Solar 2024 Limited Edition models


SSH157 / SSJ027


  • Caliber Number: 5X83 / 3X62
  • Movement Type: GPS solar
  • Precision: ±15 seconds per month (±1 second per day)
  • Power reserve:Operating for approx. 6 months (when fully charged), power save: approx. 2 years
  • Jewels 14


  • Overcharge prevention function
  • Power save function
  • Chronograph up to 12 hours in 1/20 second increments
  • Perpetual calendar to the February 28, 2100
  • World time function (38 cities)
  • 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, manual time adjustment)
  • Satellite acquisition status display function
  • Reception result display function
  • DST (Daylight Saving Time)
  • Function to prevent the GPS signal reception (in-flight mode)
  • Automatic hand position alignment function


  • Case Material: Titanium (super hard coating) with ceramic bezel / Titanium (super hard coating) only
  • Case Size
    Thickness: 13.4mm / 12.0mm
    Diameter: 43.3mm / 41.2mm
    Lug-to-lug: 49.5mm / 48.6mm
    Distance between lugs: 14mm
  • Water Resistance 10 bar

Other Details

  • Crystal: Dual-curved sapphire crystal
  • Crystal Coating: Super-clear coating
  • LumiBrite: Lumibrite on hands and index(es)
  • Clasp: Three-fold clasp with push button release
  • Distance between lugs 14mm
  • Water Resistance 10 bar
  • Magnetic Resistance 4,800 A/m
  • Weight 117.0g / 110.0g


  • LIMITED EDITION on the case back
  • Serial number engraved on the case back
  • Allergy-safe metal
  • Clasp with Smart Adjuster function
  • Screw case back

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