Breitling 15

Breitling, a manufacturer recognized for its robust and precise timekeeping instruments, produces the Breitling 15, an automatic mechanical movement. This caliber is designed to power various timepieces, offering a blend of functional specifications that contribute to its operational characteristics and user experience. As an automatic movement, it harnesses the natural motion of the wearer's wrist to wind its mainspring, eliminating the need for manual winding when worn regularly. The Breitling 15 incorporates 17 jewels within its mechanism. These synthetic rubies are strategically placed at points of high friction, such as pivots for gears and the balance wheel. Their purpose is to reduce wear on metal components, thereby enhancing the movement's longevity and contributing to the stability of its performance over time. The movement operates at a frequency of 18,000 vibrations per hour (vph), which translates to 2.5 Hertz. This frequency means the balance wheel completes 2.5 oscillations per second, resulting in the seconds hand advancing in five distinct steps per second. This rate provides a smooth sweep of the seconds hand and contributes to the movement's accuracy, offering a balance between precision and the wear on internal components. A power reserve of 37 hours allows the Breitling 15 to continue functioning for over a day and a half when fully wound and not being worn. For the wearer, this means the watch will likely remain running if taken off overnight, though it would require resetting if left unworn for a full weekend. The physical dimensions of the movement are 28.55 mm in diameter and 6.15 mm in height. These measurements are significant as they dictate the potential size and thickness of the watch case that houses the caliber. A diameter of 28.55 mm is versatile, suitable for a range of watch sizes, while the 6.15 mm height suggests that watches powered by the Breitling 15 can maintain a relatively moderate profile on the wrist, contributing to overall wearer comfort. The specified lift angle of 52° is a technical parameter primarily relevant to watchmakers during the regulation and servicing of the movement. This value is crucial for accurately measuring the amplitude and beat error of the balance wheel on a timegrapher, ensuring the movement can be precisely adjusted for optimal timekeeping. While not directly impacting the wearer's daily experience, it is an essential detail for proper maintenance and calibration. Collectively, the specifications of the Breitling 15 describe a functional automatic movement designed for reliable timekeeping, offering practical benefits in terms of self-winding convenience, consistent operation, and a reasonable power reserve for daily wear.

Specifications

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