The Rolex GMT-Master was introduced in 1954, as a response to the request of Pan Am airlines, for a reliable watch that can display two time zones at once. Rolex was able to accomplish this with the now iconic 24-hour hand and bi-color 24-hour bezel. In its almost 70-year history, the Rolex GMT-Master has gone through several updates, while keeping the design DNA that fans have come to love. Explore our collection of authentic, pre-owned Rolex GMT-Master watches for men and women at Top Quality Designer Watch Shop.