Seiko SSH187J1

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

Seiko Astron GPS Solar ‘Spiral Galaxy’ Limited Edition Chronograph

£2,500

This item will be released January 5, 2026.
Limited Edition of 1,500 pieces
Make an Enquiry
View Finance Options
From only £187.50 per month.
Finance is subject to application and status.
×

Finance Information

V12 Finance plans available at checkout
Deposit
Choose your deposit amount
Pay monthly
10%
20%
30%
40%
50%
Monthly Payments
Choose your monthly payments over 6 or 12 months
£250.00
Today
£375.00
Every month
over 6 months
6 Months
£187.50
Every month
over 12 months
12 Months
APR
0%
Interest
Free
Total
£2,500.00
How it works
  • Select your preferred payment method at checkout
  • Follow the on-screen instructions to complete your application or agreement
  • Complete your checkout
  • You'll be charged based on the payment plan you selected
This watch will be available in January

Description

Astron was created from Seiko’s passion for innovation, and now, under the design theme of ‘Solidity,’ a series of solar timepieces have been created for the innovative future ahead for Seiko watchmaking.

There are just 1,500 pieces of this limited edition available worldwide, with very few in the UK. Lightweight with strong looks, within a super hard coated titanium case and bracelet, under dual curve sapphire glass crystal the dark turquoise blue dial showcases a ‘spiral galaxy’ pattern. Within an all-black 43.3mm case and ceramic bezel, with a circular whirling effect, like a galaxy in space – the glittered effect is designed to depict bright stars.

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 model has its own contemporary feel, with its sleek lines, slim profile, and compact, angular design it has an almost seamless flow from the case through the lugs and to the bracelet. The bracelet is crafted from titanium for lightweight wearing with a mirror effect centre link and a micro-adjustable clasp feature.

Powered by a new in-house 5X83 solar-powered movement, it not only charges efficiently, but also features a 1/20th of a second chronograph function for measuring elapsed time. The subdial at 12 o’clock is for the chronograph feature, the subdial at 9 o’clock for setting modes, and the subdial at 6 o’clock for a dual-time feature.

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: 5X83
Movement Type: GPS Solar
Power Reserve: Operating for approx. 6 months (when fully charged), power save: approx. 2 years
Jewels: 14
Exterior
Dial Colour: Blue
LumiBrite: Lumibrite on hands and indexes
Case Material: Titanium (super-hard coating) with ceramic/aluminum bezel
Strap/Bracelet: Titanium (super-hard coating)
Clasp: Three-fold clasp with push button release
Case Diameter: 43.3mm
Case Thickness: 13.4mm
Case Length: 49.5mm
Lug Width: 14.0mm
Other Specifications
Water Resistance: 10 bar
Weight: 117.0g
Crystal Coating: Super-clear coating
Crystal Type: Dual-curved 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, Chronograph up to 12 hours in 1/20 second increments, Day display, DST (Daylight Saving Time), Dual-time function, 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, Time transfer function (Switching between the main-dial and sub-dial), World time function (38 cities)
Magnetic Resistance: 4,800 A/m

Boutique Online Services

Secure Payment Options

Click and Collect

Download Product Details

Customer Support