Seiko Astron GPS Solar 2026 Limited Edition SSH187
A design featuring a galaxy of swirling stars
This watch’s dial features a newly developed embossed spiral pattern, which radiates from the center to convey the energy of flowing stars. The all-black case and bracelet, paired with a dark turquoise-colored dial infused with glitter, evokes the image of swirling galaxies emerging from the pitch-black cosmos.
The case and bracelet are finished with a scratch-resistant hard coating designed to maintain a jet-black sheen. The clasp’s adjustment system allows for easy fine-tuning of the bracelet’s length.
Limited edition of 1,500 pieces
Specifications
- Case: Titanium (super-hard coating) with ceramic/aluminum bezel, LIMITED EDITION on the case back
- Caseback: Screw-down
- Size: 41.2mm x 12mm thick (48.6mm lug-to-lug)
- Caliber Number: 5X83 GPS solar
- Power reserve: Operating for approx. 6 months (when fully charged), power save: approx. 2 years
- Jewels: 10
- 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
- Crystal: Dual-curved sapphire with super-clear coating
- Bracelet: Titanium with tri-fold clasp with push button release
- Water resistance: 100 meters (10 bar)
Product Information
Product Information
Shipping & Returns
Shipping & Returns


Seiko Astron GPS Solar 2026 Limited Edition SSH187
Seiko Astron GPS Solar 2026 Limited Edition SSH187
A design featuring a galaxy of swirling stars
This watch’s dial features a newly developed embossed spiral pattern, which radiates from the center to convey the energy of flowing stars. The all-black case and bracelet, paired with a dark turquoise-colored dial infused with glitter, evokes the image of swirling galaxies emerging from the pitch-black cosmos.
The case and bracelet are finished with a scratch-resistant hard coating designed to maintain a jet-black sheen. The clasp’s adjustment system allows for easy fine-tuning of the bracelet’s length.
Limited edition of 1,500 pieces
Specifications
- Case: Titanium (super-hard coating) with ceramic/aluminum bezel, LIMITED EDITION on the case back
- Caseback: Screw-down
- Size: 41.2mm x 12mm thick (48.6mm lug-to-lug)
- Caliber Number: 5X83 GPS solar
- Power reserve: Operating for approx. 6 months (when fully charged), power save: approx. 2 years
- Jewels: 10
- 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
- Crystal: Dual-curved sapphire with super-clear coating
- Bracelet: Titanium with tri-fold clasp with push button release
- Water resistance: 100 meters (10 bar)
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
A design featuring a galaxy of swirling stars
This watch’s dial features a newly developed embossed spiral pattern, which radiates from the center to convey the energy of flowing stars. The all-black case and bracelet, paired with a dark turquoise-colored dial infused with glitter, evokes the image of swirling galaxies emerging from the pitch-black cosmos.
The case and bracelet are finished with a scratch-resistant hard coating designed to maintain a jet-black sheen. The clasp’s adjustment system allows for easy fine-tuning of the bracelet’s length.
Limited edition of 1,500 pieces
Specifications
- Case: Titanium (super-hard coating) with ceramic/aluminum bezel, LIMITED EDITION on the case back
- Caseback: Screw-down
- Size: 41.2mm x 12mm thick (48.6mm lug-to-lug)
- Caliber Number: 5X83 GPS solar
- Power reserve: Operating for approx. 6 months (when fully charged), power save: approx. 2 years
- Jewels: 10
- 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
- Crystal: Dual-curved sapphire with super-clear coating
- Bracelet: Titanium with tri-fold clasp with push button release
- Water resistance: 100 meters (10 bar)
















