Omega 1861

Omega manufactures the caliber 1861, an automatic movement recognized for its role in various timepieces. Also known as Cal. 1861 or Lemania 1873, this mechanism provides essential timekeeping functions within a compact form factor. As an automatic movement, the Caliber 1861 winds itself through the wearer's motion, eliminating the need for manual winding when worn regularly. It incorporates 18 jewels, which are synthetic rubies strategically placed at points of high friction to reduce wear on moving parts, contributing to the movement's operational longevity and stability. The movement operates at a frequency of 21,600 vibrations per hour (vph), which translates to 3 Hz. This beat rate allows the seconds hand to advance in smaller, smoother increments, providing a consistent visual flow on the dial. With a diameter of 27 mm, the 1861 is designed to fit into a range of watch cases, influencing the overall size and wearability of the timepiece. A notable feature of the 1861 is its power reserve of 48 hours. This means that a fully wound watch powered by this caliber can continue to operate for up to two days when not being worn, offering practical convenience for the wearer who might alternate watches. The movement's primary complications include small seconds, hours, and minutes. The small seconds complication typically manifests as a sub-dial, providing a continuous indication of the seconds without interfering with the main hour and minute hands. This arrangement allows for clear and precise time reading, with the small seconds hand offering a discrete visual confirmation of the watch's operation.

Specifications

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Also Known As

Watches Using This Caliber(78)

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