Prospex LX GMT U.S. Special Edition. Seiko Prospex challenges every limit with timepieces created to exceed expectations, engineered with superior style and innovative technology for sea, sky, or land. Inspired by the North America Nebula, located approximately 2,000 light years from Earth, this extraordinary Special Edition features a dramatic brown-to-black gradated dial evoking the diffuse formation fading into the darkness of space. Framed by a glossy dual-tone sapphire GMT bezel with rose gold accents, the dial is complemented by a rose gold-tone GMT hand and includes a power reserve indicator, date calendar, and LumiBrite hands and markers. Powered by a Spring Drive GMT movement, this precision timepiece combines a 30-jewel automatic movement with a quartz regulator, achieving an accuracy of +/- 1 second per day (+/- 15 seconds per month) and offering a power reserve of approximately 72 hours. Crafted of lightweight titanium with a super-hard coating, it features a sapphire crystal with super-clear coating, screwdown crown and caseback, and a secure tri-fold push-button release clasp. 100 meters water resistant.