The Evolution of the Rolex GMT-Master: From the Skies to the 126710BLRO Born in the golden age of aviation, the Rolex GMT-Master was introduced in 1955 as a tool watch for Pan Am pilots navigating the dawn of intercontinental travel. Its defining feature — a 24-hour hand paired with a rotatable bezel — allowed wearers to read two time zones simultaneously, an innovation that made it indispensable for jet-setters and explorers alike. In 1982, the GMT-Master II refined the concept with an independently adjustable hour hand, offering even greater versatility. Over the decades, the collection evolved with advancements in materials, movements, and precision — yet always retained its adventurous spirit. Today, the Rolex GMT-Master II 126710BLRO, affectionately known as the “Pepsi”, stands as a modern icon. Its red and blue Cerachrom bezel pays homage to the original bakelite design, while the Oystersteel case, jubilee bracelet, and Calibre 3285 movement embody Rolex’s relentless pursuit of excellence. From cockpit instrument to luxury statement, the GMT-Master has journeyed through time zones and generations — a timeless symbol of precision, innovation, and adventure.