Seiko Astron
SSH185 GPS Solar 2025 Limited Edition

Seiko Astron SSH185 GPS Solar 2025 Limited Edition

October 2025 Release

A limited-edition model that expresses the near future with dynamic and unique coloring.

A dial design inspired by the high-speed journey of light.

The dial features a new horizontal pattern with intermittent lines, evoking the image of light traveling at high speed. Light green accents are applied to various parts, creating a sporty design.

Distinctive design with contrasting materials.

The titanium case and bracelet are finished with a scratch-resistant black hard coating and combined with white ceramic to create a contrasting design that highlights the fusion of different materials.

The adjustment system for the clasp allows easy fine-tuning of the bracelet’s length.

Movement

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

Functions

• 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

Features

• LIMITED EDITION on the case back
• Serial number engraved on the case back
• Against an allergic reaction to nickel
• Clasp with Smart Adjuster function
• Screw case back