The Breitling Navitimer is a legend, a watch synonymous with aviation history and precision timekeeping. While many associate the Navitimer with its in-house movements, a significant portion of its legacy is tied to the robust and reliable ETA 7750, a movement often referred to as the Valjoux 7750. This article delves deep into the Breitling Navitimer powered by this celebrated chronograph movement, exploring its features, the ETA 7750's technical specifications, its affordability within the luxury watch market, and the broader context of the movement's cost and availability.
The Breitling Navitimer and the ETA 7750: A Successful Partnership
Before we dissect the technicalities, it's crucial to understand the significance of the ETA 7750's role in the Navitimer's story. While Breitling is renowned for its in-house calibers, the ETA 7750 provided a reliable and cost-effective base for a wider range of Navitimer models, making the iconic chronograph accessible to a broader audience. The Calibre 17, mentioned in the provided text, is Breitling's designation for the ETA 7750 movement after it undergoes their modifications and quality control processes. This partnership allowed Breitling to maintain the Navitimer's design integrity and functionality without compromising accessibility. The 41mm size mentioned, while not explicitly tied to the 7750 exclusively, represents a popular size within the Navitimer lineup often equipped with this movement. The black alligator leather strap with white contrast stitching is a classic choice, enhancing the watch’s timeless elegance.
ETA 7750 Technical Guide: A Workhorse Movement
The ETA 7750 (often referred to as Valjoux 7750 due to its lineage) is a legendary automatic chronograph movement. Its technical prowess lies in its robust construction, reliable performance, and relative ease of maintenance. Let's explore its key features:
* Automatic Winding: The movement utilizes an automatic winding system, eliminating the need for manual winding. This self-winding mechanism ensures consistent power reserve.
* Chronograph Function: The 7750 is a full-fledged chronograph, offering functions for measuring elapsed time with a central chronograph seconds hand, 30-minute counter, and 12-hour counter. These counters are typically positioned at sub-dials on the watch face.
* Date Display: A date window is usually incorporated at the 3 o'clock position, providing a practical daily calendar function.
* High Beat Rate: The 7750 operates at a frequency of 28,800 vibrations per hour (4 Hz), contributing to its accuracy and smooth operation.
* Modular Design: The modular design of the 7750 allows for relatively easy modifications and customization, making it a popular choice for watch manufacturers. Breitling utilizes this modularity to integrate the movement into the Navitimer’s design.
* Power Reserve: The 7750 typically offers a power reserve of approximately 48 hours when fully wound.
The ETA 7750's widespread adoption is a testament to its engineering excellence. Its robust construction and proven reliability have made it a staple in the watchmaking industry for decades.
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