Miyota (watch movement manufacturer)
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Miyota is a Japanese manufacturer of quartz and mechanical watch movements. As such Miyota is part of the Citizen group of companies. In this group Miyota is a part of the Citizen Watch Co., Ltd. Movement Division. In 1959 Citizen Watch established a movement-making factory in the town of Miyota, Japan. In 2016 a large movement assembly factory in Saku city, Nagano prefecture was opened. Most watch brands do not make their own movements in house, but rather use standard watch movements manufactured by specialized companies like Miyota.
Miyota produces various 'standard' and 'premium' grade mechanical movements for automatic wristwatches.
The Miyota 8215 is an entry level non-hacking twenty-one jewel three-hand with date automatic wristwatch movement with a uni-directional winding system (left rotation) with an accuracy of -20 to +40 seconds per day, and a power reserve of over 40 hours. It allows hand winding. The date window may be placed at the 3 o'clock position (cal. 8215-33A) or at 6 o'clock (cal. 8215-36A). The diameter of the movement is 26 mm and the thickness is 5.67 mm. It beats at 21,600 BPH or 3 Hz (6 half-cycles per second). The movement has a 49 degree lift angle.
The Miyota 9015 is a more sophisticated hacking twenty-four jewel three-hand with date automatic wristwatch movement with a uni-directional winding system (left rotation). The 9015 automatic movement has a beat rate of 28,800 BPH (= 4 Hz), 51 degrees lift angle, 24 jewels and features (automatic) winding, a ≥ 42 hours power reserve, manual winding and a hack function (stopping the movement of the second hand). The static accuracy rating is -10 ~ +30 seconds per day (23º ± 2ºC).
Miyota also produces various electric driven movements for quartz watches. These are categorized in standard, slim, small, multi-function, chronograph, and small second chronograph movements.
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