Seiko Astron GPS Solar 2026 Limited Editions: SSH187 & SSJ039

Seiko introduces two new exclusive editions within the Astron GPS Solar collection: The SSH187 and SSJ039 models embody cutting-edge watchmaking technology encapsulated in cosmic-inspired design.

The design, inspired by the Spiral Galaxy phenomenon, is built on dramatic contrast: the dark turquoise dial, adorned with an embossed texture and a glittering effect, is set within a strictly all-black case and bracelet, crafted from lightweight and durable titanium with a super-hard coating.

SSH187: The Flagship Chronograph with Caliber 5X83

The SSH187 model is positioned as the technological flagship of the series. It is equipped with one of Seiko's most sophisticated GPS calibers — the 5X83, which provides not only automatic time correction via GPS signals and a perpetual calendar but also a full chronograph function accurate to 1/20th of a second.

On the chronograph dial, the complexity of the technical execution harmonizes with visual richness. The "Spiral Galaxy" design is integrated into the multi-layered dial architecture, where the radiating pattern emphasizes the dynamics and functional depth of the timepiece. The titanium case with protective coating ensures light weight despite the impressive dimensions.

SSJ039: Clean Lines and Compact Cosmos with Caliber 3X62

The SSJ039 model offers a more minimalist and versatile interpretation of the cosmic theme, utilizing the new generation of compact Astron calibers — the 3X62. This movement allows for a significantly reduced case diameter and thickness, enhancing the watch’s wearability for daily use.

In the SSJ039, the absence of additional chronograph registers allows the "Spiral Galaxy" design to become the dominant visual feature. This clean canvas, with its light-emitting central relief, most fully conveys the idea of a "vortex of galaxies" within a more restrained case. The 3X62 caliber provides essential functions like World Time and Dual-Time, making it ideal for the international traveler.

The release of the limited editions SSH187 and SSJ039 (with 1,500 pieces of each version) demonstrates Seiko's commitment to the harmonious fusion of technological excellence and expressive aesthetics. Both models offer a unique way to wear a piece of the distant cosmos on the wrist.

Seiko Astron GPS Solar 2026 Limited Edition Ref. SSH187

Technical specifications

Seiko Astron GPS Solar 2026 Limited Edition

Reference: SSH187

Limited edition of 1,500 pieces

Case

Material: Titanium (super-hard coating) with ceramic/aluminum bezel
Diameter: 43.30 mm
Thickness: 13.40 mm
Lug-to-lug: 49.50 mm
Glass: Dual-curved sapphire crystal
LIMITED EDITION on the case back
Serial number engraved on the case back
Against an allergic reaction to nickel
Screw case back
Water-resistant to 10 bar
Magnetic resistance: 4,800 A/m
Weight: 117.0g

Dial and hands

Dark turquoise dial, infused with glitter
Lumibrite on hands and index(es)

Movement

Caliber 5X83
Movement type: GPS solar
Precision: ±15 seconds per month (without receiving a GPS signal and at temperatures between 5°C and 35°C )
Number of jewels: 14
Power reserve: Operating for approx. 6 months (when fully charged), power save: approx. 2 years

Functions/Indications

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

Strap and buckle

Titanium (super-hard coating) bracelet
Three-fold clasp with push button release
Clasp with Smart Adjuster function
Lug width: 14 mm

MSRP

CHF 2'869
USD 2'900

Seiko Astron GPS Solar 2026 Limited Edition Ref. SSJ039