First launched in 2012, the Sky-Dweller is easily the most complex watch in Rolex's current catalog. Combining a dual timezone display with GMT functionality and an annual calendar complication, the Rolex Sky-Dweller was designed to be the perfect luxury travel watch intended for traveling business executives and the jet-setting crowd. Available only in precious metals, as one of the most expensive (non-jewelry) Rolexes, it's been more visible as a luxury watch rather than as a tool watch.