The Rolex GMT-Master Ref. 1675 “Root Beer” is a legendary vintage timepiece that masterfully blends the robust functionality of a professional pilot’s watch with the unmistakable warmth of precious metal, earning its affectionate nickname from the rich autumnal tones of its brown dial and two-tone brown and champagne bezel insert . This iconic 40mm two-tone Rolesor model, produced from the late 1950s through the 1980s, features a captivating matte brown “nipple” dial—so named for the distinctive applied yellow gold hour markers with luminous centers—which can shift from a deep chocolate to a reddish-burgundy hue depending on the light . The warm, vintage aesthetic is completed by a faded gold and brown bezel insert and a comfortable two-tone Jubilee or Oyster bracelet, making it a supremely wearable statement of vintage style . At its heart, this horological icon is powered by the legendary in-house automatic Caliber 1575, a COSC-certified chronometer movement renowned for its robustness and precision, delivering a reliable 48-hour power reserve . With its 100-meter water resistance and the GMT function that allows for the tracking of a second time zone via the bidirectional 24‑hour bezel, this ref. 1675 represents the ultimate fusion of Rolex’s tool‑watch DNA and a distinctive, coveted aesthetic that has made it one of the most collectible vintage sports watches in the world . Key specifications: 40mm stainless steel and yellow gold case; brown “nipple” dial with yellow gold markers; Rolex Caliber 1575 automatic chronometer movement; 48-hour power reserve; brown and champagne bidirectional 24-hour bezel; two-tone Jubilee or Oyster bracelet; 100m water resistance; acrylic crystal with Cyclops date magnification.