Miyota 8215

The Miyota 8215, also known as Cal. 8215, is an automatic mechanical movement produced by Miyota. This caliber serves as a foundational component in various timepieces, providing essential timekeeping functions through its robust design. As an automatic movement, the 8215 is self-winding, meaning it harnesses the natural motion of the wearer's wrist to power itself, eliminating the need for manual winding or battery replacement under regular use. It incorporates 21 jewels, which are synthetic rubies strategically placed at points of friction within the movement. These jewels reduce wear on metal components, contributing to the movement's longevity and consistent performance. The movement operates at a frequency of 21,600 vibrations per hour (vph), equivalent to 2.75 Hz. This frequency results in a relatively smooth sweep of the seconds hand, completing six beats per second. The Miyota 8215 offers a power reserve of 42 hours. This specification indicates that once fully wound, the movement can continue to operate for up to 42 hours when not worn, providing a practical duration before it requires re-winding or wearing to resume operation. With a diameter of 26 mm and a height of 7.1 mm, the 8215 is a moderately sized movement, allowing it to be housed in a range of watch cases without excessive bulk. Its accuracy is specified at 15 seconds per day, meaning the watch can gain or lose up to 15 seconds over a 24-hour period. The lift angle, a technical parameter primarily used by watchmakers for timing instruments, is 52°. The 8215 features several complications, providing more than just basic time display. It indicates hours, minutes, and seconds, which are fundamental for everyday time telling. The inclusion of a seconds hand allows for more precise timing and confirms the movement's ongoing operation. Additionally, the movement incorporates a date complication, displaying the current day of the month. This feature adds practical utility for the wearer, offering a quick reference to the date alongside the time. The Miyota 8215 powers a selection of watches, demonstrating its integration into diverse designs. These include the Miyota Laarvee Crashed Submariner Stainless Steel - Green / Black (Ref. PEA001-SS-VN), a 40mm timepiece. It is also found in several 47mm models from SevenFriday, such as the Miyota SevenFriday M1/04 Punk (Ref. M1/04), the Miyota SevenFriday M1/03 (Ref. M1/03), the Miyota SevenFriday M2/01 (Ref. M2/01), and the Miyota SevenFriday M1/02 UAE Edition (Ref. M1/02-UAEE). These applications highlight the movement's role in providing reliable, automatic timekeeping with practical complications for daily wear.

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Watches Using This Caliber(12)

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