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Miyota 8210

Miyota · Automatic

Miyota, a key manufacturer in the horological industry, offers the 8210, an automatic mechanical movement. This caliber is designed to power watches through the natural motion of the wearer's wrist, eliminating the need for manual winding when worn regularly. Its construction and performance are defined by a specific set of technical parameters, which collectively determine its operational characteristics and suitability for various watch designs. The 8210 movement incorporates 17 jewels. These synthetic rubies are strategically placed at critical points of friction within the movement's gear train. Their primary function is to reduce wear between moving metal parts, thereby contributing to the movement's longevity and ensuring consistent, reliable performance over time. The balance wheel of the 8210 oscillates at a frequency of 21,600 vibrations per hour (vph), which translates to 3 Hz. This frequency dictates the rate at which the movement "beats," influencing both the accuracy of timekeeping and the visual sweep of the seconds hand across the dial. A frequency of 21,600 vph results in a seconds hand that moves in six steps per second, providing a relatively smooth motion. In terms of energy storage, the Miyota 8210 features a power reserve of 42 hours. This means that once the movement is fully wound, either through wear or manual winding, it can continue to operate for approximately one day and eighteen hours without further input. This duration offers practical convenience for the wearer, allowing the watch to be removed for a full day and night without stopping, provided it was fully wound beforehand. The physical dimensions of the 8210 are also a defining characteristic: it has a diameter of 17.5 mm and a height of 4.65 mm. These compact measurements indicate that the movement is relatively small and thin, which allows watch manufacturers flexibility in designing watch cases. Such dimensions can facilitate the creation of watches with more modest case sizes or slimmer profiles, appealing to different aesthetic preferences. Collectively, the specifications of the Miyota 8210 describe an automatic movement characterized by its specific operational parameters. Its 17 jewels support durability and reduce friction, while the 21,600 vph frequency defines its timekeeping rhythm and the motion of its seconds hand. The 42-hour power reserve offers practical convenience for daily wear, allowing for extended periods off the wrist without cessation of function. Furthermore, its compact dimensions allow for versatility in watch design, enabling its integration into a range of watch cases. These attributes define the 8210 as a functional automatic caliber within the Miyota range, providing specific performance metrics for the watches it powers.

TypeAutomatic
Jewels17
Frequency21,600vph
Power Reserve42hrs
Diameter17.5mm

Specifications

TypeAutomatic
Jewels17
Frequency21,600 bph
Power Reserve42 hours
Diameter17.5 mm
Height4.65 mm
Accuracy--
Lift Angle--

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