Most GMTs are decidedly sporty, often resembling diving watches. Which makes the field-style looks of Seiko's 5 Sports SSK025 so refreshing. This stealthy offering pairs a black-coated stainless steel case and bezel with a black dial and black calfskin strap. Powered by a 4R34 automatic movement, it has a distinct five-sized GMT hand that works with the fixed 24-hour bezel to keep track of time in a second zone. The black dial is outfitted with Arabic numerals and LumiBrite hands and indexes for excellent legibility, as well as a date window at 3 o'clock for maximum functionality.