Longines Spirit Zulu Time In 39mm

With a bi-directional 24-hour GMT bezel, the Spirit Zulu (in either sizing) mirrors the function set established by popular GMTs like the Tudor Black Bay GMT, the Black Bay Pro, and the Rolex GMT-Master II. Basically, you can set the main time display to show local and the 24-hour hand to show home time (leaving the bezel in its natural position), or you can adjust the 24-hour hand to show UTC time and then rotate the bezel to show a third time zone (local, UTC, and UTC offset). To put a bow on the specs, the crystal is sapphire, the caseback is closed, the lugs are not drilled, the crown screws down, the bezel insert is ceramic (non-lumed, aside from the triangle marker), and the water resistance is 100 meters.