Description: Rolex GMT-Master 16700 Pre-owned Rolex GMT-Master ref 16700 (1990). The GMT-Master was originally developed during the 1950s as a tool watch for international pilots and Pan Am crews who needed to track multiple time zones during long-haul flights. The rotating 24-hour bezel and additional GMT hand quickly made it one of Rolex’s most recognizable sports watches, especially in the famous red-and-blue “Pepsi” configuration that became closely tied