Seiko Astron GPS Solar 2026 Limited Edition SSH187

A Galaxy on Your Wrist. Limited to 1,500 Pieces.The cosmos has always been Seiko's ultimate reference point — a company that built its reputation on precision timekeeping looks naturally to the stars. The Seiko Astron SSH187 makes that connection literal and visual: a dark turquoise dial infused with glitter that emerges from an all-black case and bracelet to conjure the image of galaxies forming in the pitch-black cosmos. A newly developed embossed spiral pattern radiates from the center of the dial, evoking the energy of swirling stars in motion. It is one of the most visually striking watch dials Seiko has ever produced.Beneath the extraordinary exterior, the GPS Solar Caliber 5X83 self-adjusts to atomic clock accuracy via satellite signal and runs for approximately 6 months on a full charge — or up to 2 years in power save mode. The 43.3mm titanium case with scratch-resistant super-hard coating maintains a deep jet-black sheen over time, while the dual-curved sapphire crystal with super-clear coating delivers exceptional clarity. Each piece carries a unique serial number engraved on the case back alongside the LIMITED EDITION designation. Only 1,500 pieces exist.The universe on your wrist. Precisely.Specifications Case Diameter: 43.3mm | Thickness: 13.4mm | Lug-to-Lug: 49.5mm Case Material: Titanium with super-hard coating | Ceramic/aluminum bezel Crystal: Dual-curved sapphire with super-clear coating Bracelet: Titanium with super-hard coating | Lug Width: 14mm Dial: Dark turquoise with glitter, embossed spiral pattern Water Resistance: 10 bar (100m) Magnetic Resistance: 4,800 A/m Movement: GPS Solar Caliber 5X83 Precision: ±15 sec/month (without GPS signal) Power Reserve: Approx. 6 months (fully charged) | 2 years (power save) Functions: GPS time adjustment, world time (38 cities), dual-time, chronograph (12hr), perpetual calendar, day, power reserve indicator, DST, in-flight mode Weight: 117.0g Reference: SSH187 Additional Details Brand: Seiko | Collection: Astron Limited Edition: 1,500 pieces worldwide | Individual serial number on case back Nickel-free construction LumiBrite on hands and indexes Authorized DePaula Jewelers dealer