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Return To ShopThe ISA 1198/31 is a mechanical watch movement. It is equipped with a sweep seconds function, allowing the second hand to move in a continuous sweeping motion rather than ticking. It utilizes a pin lever escapement, which is a type of escapement mechanism. The beat rate of the movement is 21600 vibrations per hour (vph), determining the frequency at which the movement oscillates.
The ISA 1198/31 features the following functions:
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