The first GMT model in Seiko's Field series, the SSK023 pairs a trench-watch-inspired dial with a genuine second-timezone complication via a bold, five-sided red GMT hand. A brushed 24-hour bezel and curved Hardlex crystal keep the reading fast and legible, whether checking local time or a second zone at a glance.

Inside is Seiko's in-house Caliber 4R34, offering hand-winding and hacking seconds alongside a 41-hour power reserve, visible through a screw-down exhibition caseback. A tri-fold clasp with push-button release and lock secures the multi-link bracelet for daily wear.