Ronda 013P-21

The Ronda 013P-21 is a manual-winding mechanical movement produced by Ronda, a Swiss manufacturer known for its watch calibers. This particular movement is engineered to provide timekeeping functionality through a system of gears and springs, requiring direct interaction from the wearer to maintain its power supply. Central to the movement's construction are its 7 jewels. These synthetic rubies are strategically positioned at critical pivot points within the gear train. Their purpose is to minimize friction between moving metal parts, thereby reducing wear and tear, and contributing to the movement's operational stability and longevity over time. The physical dimensions of the Ronda 013P-21 are notable: it measures 45.75 mm in diameter and has a height of 10.1 mm. These measurements indicate a movement with a substantial footprint, suggesting its suitability for larger watch cases. The diameter implies a watch that will have a significant presence on the wrist, while the height contributes to the overall profile of the timepiece it powers. The operational speed of the Ronda 013P-21 is 18,000 vibrations per hour (vph), which corresponds to a frequency of 2.5 Hz. This beat rate is characteristic of many traditional mechanical movements. For the wearer, this frequency translates to a seconds hand that advances in five distinct steps per second, a visual characteristic that distinguishes mechanical timepieces from quartz alternatives. A fully wound Ronda 013P-21 offers a power reserve of 33 hours. This means that once the mainspring is fully tensioned, the movement will continue to operate for just over a day and a half without further winding. If the watch is not worn or wound during this period, it will cease to function, necessitating manual winding to restart its operation. In summary, the Ronda 013P-21 presents as a manually wound mechanical movement with a traditional beat rate and a practical power reserve. Its substantial dimensions suggest its application in timepieces designed for a larger wrist presence. The integration of 7 jewels underscores a design focus on reducing internal friction. For the wearer, this caliber provides a direct, interactive experience with mechanical timekeeping, requiring regular manual winding to maintain its function.

Specifications

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