This reference represents the integration of a travel complication into the major 2021 redesign of the Aquaracer Professional 300 collection. The update codified the line's modern identity with a 12-sided, bi-directional ceramic bezel and a new sunray blue dial with a horizontal-groove pattern. This 43mm steel model is defined by its two-tone, 24-hour bezel insert in blue and white, indicating day and night. Inside, the automatic Calibre 7 provides a "caller" GMT function, where the yellow-tipped GMT hand is set independently.
From its founding in 1860, Heuer established a reputation for precision built on foundational innovations. Edouard Heuer's 1887 patent for the oscillating pinion remains a critical component in modern chronographs, while the 1916 "Mikrograph," the first stopwatch capable of measuring 1/100th of a second, secured the brand's role as an official Olympic timekeeper. This early focus on accuracy naturally led to a deep-seated connection with motorsports, where the brand's dashboard timers became essential equipment for rally drivers, laying the groundwork for an identity forged on the racetrack.
The brand's ties with racing was immortalized in the 1960s with a trio of legendary chronographs: the Carrera, Autavia, and the avant-garde Monaco. The Monaco, with its distinctive square case, became an icon on the wrist of Steve McQueen in the film Le Mans and was one of the first watches to house the groundbreaking Calibre 11 automatic chronograph movement. After its acquisition by Techniques d'Avant Garde (TAG) in 1985, the brand solidified its legendary status through a decades-long partnership with Formula 1.
Overall Grade: 9 / 10 | Mint Condition, Light Signs of Wear Production: 2024 Brand New Contents: Full-set Genre: Dive Watch
Size: 43mm Thickness: 13.45mm Lug Width: 21mm
Case: Steel case, brushed side pattern with beveled edges Bezel: Ceramic rotating GMT bezel, white-blue colorway Dial: Blue horizontal pattern dial, applied lumed markers Hands: Sword hands, lumed
Crown: Steel screw down crown Crystal: Sapphire crystal Bracelet: Blue rubber strap and clasp Caseback: Solid signed screw caseback Movement: Automatic GMT Caliber: Calibre 7