The Seiko Astron SSH155J1 GPS Solar Chronograph combines advanced satellite precision with a sleek black titanium design. Featuring the 5X83 calibre, it delivers dual-time tracking, world time, and a perpetual calendar accurate until 2100. The 39.5mm titanium case with ceramic bezel offers durability and lightweight comfort, while the sapphire crystal with super-clear coating ensures clarity. With 100M water resistance and a power reserve of up to 6 months, this Astron is built for global travelers who value innovation and style.