This Astron solar-powered watch, themed "Solidity," reflects Seiko's innovation since 1881. Its blue dial with a vertical hairline finish sits beneath sapphire crystal, housed in a sleek, slim titanium case with a super-hard coating for scratch resistance. Powered by the 5X83 solar GPS calibre, it offers precise chronograph measurement to 1/20th of a second, ±15 seconds/month accuracy, and a six-month power reserve. Rechargeable by any light source, it ensures convenience and reliability. Seiko Astron: the worlds first GPS solar watch, powered by light and synchronized to your exact time via satellite technology. Powered by the solar powered movement with 14 jewels and a power reserve of up to 6 months.Presented on a silver titanium bracelet .Scratch resistant sapphire crystal glass.42mm case width.100 metre water resistance.