Breitling 12

An automatic movement developed by Breitling, the Breitling 12 serves as a foundational timekeeping mechanism. This caliber is also recognized by its alternative designation, A. Schild 1687, indicating its technical lineage. As an automatic movement, the Breitling 12 is designed to self-wind through the motion of the wearer's wrist, eliminating the need for manual winding when worn regularly. This feature provides convenience, ensuring the watch remains powered as long as it experiences sufficient movement from the wearer. The internal construction of the Breitling 12 incorporates 21 jewels. These jewels are strategically placed at points of high friction within the movement, acting as bearings to reduce wear on metal components. This design choice contributes to the movement's longevity and consistent performance over time. Operating at a frequency of 21,600 vibrations per hour (vph), which translates to 3 Hz, the balance wheel oscillates at a rate that influences both the accuracy of the timekeeping and the visual sweep of the seconds hand.

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