Are you curious to know the difference between a watch movement and a caliber?

A watch movement refers to the internal mechanism that powers a timepiece, while a caliber specifically refers to the model or series of that movement, assigned by watchmakers to distinguish between various designs. The caliber details a movement’s technical specifications, such as size, shape, number of jewels, power reserve, vibration frequency, and complications (e.g., chronograph, moon phases). It acts as a technical ID, summarizing the movement’s features. For example, the Omega Speedmaster Professional uses Omega caliber 1861, which includes a mechanical movement, chronograph, and 48-hour power reserve. The caliber number provides insight into a watch's performance and history.

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