SEIKO Astron GPS Solar 2026 Limited Edition SSH187J1Collection: Astron GPS Solar 2026 Limited Edition (1,500 pieces) Crystal: Dual curved sapphire with super clear coating Dial: Dark turquoise with glitter infusion and embossed spiral pattern radiating from center; all black case with jet black sheen coating Movement: GPS Solar (Caliber 5X83); power reserve approx. 6 months fully charged 2 years in power save mode; 14 jewels; accuracy 15 sec per month without GPS signal Functions: GPS signal reception;