Miyota caliber 821A | WatchWired
Miyota caliber 821A is a reliable and precise automatic movement that is widely used in many popular watch models. This movement has 21 jewels, a frequency of 21,600 vibrations per hour, and a power reserve of approximately 42 hours. It features a hacking seconds function, which allows the second hand to stop when the crown is pulled out, making it …
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