The GMT complication was originally engineered for Pan Am pilots in the 1950s. Two timezones, one wrist, very glamorous, plenty of gin in the cabin. The bezel rotated so you could track home time while local time ran on the regular hands.
Our wall clock has all of that — minus the second timezone, the actually-rotating bezel function, and the gin. The bezel is decorative. The orange GMT hand circles the dial once a day instead of twice. The blue-and-red Pepsi insert is a tribute to a watch that, in steel, costs more than a used Civic.
What it does have: the look of a flight-engineer watch, sized to fill the wall above your desk. Which is the actual point. $89.99. Pick your colors. Imagine the gin yourself.