The Breitling Caliber 21 isn't just a movement; it's a statement. A testament to horological engineering and a bold declaration of Breitling's commitment to pushing the boundaries of precision timekeeping. This movement, renowned for its remarkable 1/10th of a second chronograph function and its impressive power reserve, holds a unique place in the brand's history and the hearts of watch enthusiasts. While its production run has concluded, its legacy continues to inspire awe and demand among collectors. This article delves deep into the Breitling Caliber 21, exploring its features, the watches that housed it, and its place within the broader context of Breitling's watch movements. We will also touch upon some related Breitling movements and models to provide a more comprehensive understanding.
The Breitling Caliber 21's most striking feature is its ability to measure time to an astonishing 1/10th of a second. This level of precision was, and remains, a significant achievement in mechanical chronograph movements. Most chronographs measure time in increments of 1/5th or 1/8th of a second, making the Caliber 21's capability truly exceptional. This wasn't achieved through simple modifications; it required a complete rethinking of the chronograph mechanism, resulting in a complex and beautifully engineered movement. The intricate design involved a high-frequency balance wheel oscillating at an impressive 36,000 vibrations per hour (vph), significantly higher than the standard 28,800 vph found in many other chronographs. This high frequency is crucial for achieving the 1/10th of a second accuracy.
The Caliber 21's complexity extended beyond its high-frequency escapement. The movement itself was substantial, showcasing Breitling's dedication to creating a chronograph that could handle the demands of its impressive accuracy. This size, while contributing to the watch's overall presence on the wrist, also meant that only specific Breitling models could accommodate the movement's dimensions.
The watches that housed the Breitling Caliber 21 were predominantly from the Montbrillant collection, a line known for its classic and sophisticated designs. Among the most sought-after models are the Breitling Montbrillant Datora. Several variations existed, each with its own unique aesthetic appeal, but all sharing the same impressive movement. The reference numbers A2133012G518, A2133012B571, and A2130012Q509 are just a few examples of the various Breitling Montbrillant Datora models powered by the Caliber 21. These watches often featured sophisticated complications, including a date display and sometimes additional chronograph functions, further emphasizing their status as high-end timepieces. The combination of the intricate Caliber 21 and the refined design of the Montbrillant case created a truly exceptional watch.
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