Automatic (Day & Date) - 8285
A reliable Japanese automatic movement featuring both day and date complications. Manufactured by Miyota, a division of Citizen Watch Co., the 8285 is known for its durability, efficient winding system, and dependable everyday performance, making it a popular choice for classic and dress watches.
The Miyota 8285 is an automatic mechanical movement developed by Miyota, a division of Citizen Watch Co., Ltd. It combines reliable automatic winding with manual winding capability and features both day and date displays, offering dependable performance and easy maintenance.
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Specification |
Details |
|---|---|
|
Manufacturer |
Miyota (Citizen Watch Co., Ltd.) |
|
Caliber |
8285 |
|
Movement Type |
Automatic with Manual Winding |
|
Functions |
Hours, Minutes, Seconds, Day & Date |
|
Jewels |
21 Jewels |
|
Beat Rate |
21,600 BPH (3 Hz) |
|
Power Reserve |
Approx. 42 Hours |
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Diameter |
26.00 mm |
|
Height |
5.67 mm |
|
Accuracy |
-20 / +40 seconds per day |
|
Hacking Seconds |
No |
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Country of Origin |
Japan |
Operating Instructions
Automatic Winding
The Miyota 8285 automatically winds itself through the natural movement of your wrist while worn.
Manual Winding
If the watch has stopped:
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Turn the crown clockwise approximately 30–40 times to sufficiently wind the mainspring.
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The watch will then continue winding automatically while being worn.
Setting the Time
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Pull the crown to the second click.
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Turn the crown until the correct time is displayed.
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Push the crown back to the normal position.
Note: The Miyota 8285 does not feature hacking seconds, so the second hand will continue moving while setting the time.
Setting the Day & Date
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Pull the crown to the first click.
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Turn the crown in one direction to adjust the date.
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Turn the crown in the opposite direction to adjust the day.
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Push the crown back to the normal position after setting.
Important: Do not adjust the day or date between 9:00 PM and 4:00 AM, as the calendar mechanism may be engaged.
Care & Maintenance
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Wear the watch regularly to keep the movement wound.
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If not worn for several days, manually wind before use.
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Avoid strong magnetic fields and severe impacts.
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Keep the crown fully pushed in (or screwed down if applicable).
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Professional servicing is recommended every 5–7 years, depending on usage and environmental conditions.
Why Choose the Miyota 8285?
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Genuine Japanese automatic movement by Citizen's Miyota
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Reliable day and date functionality
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Efficient automatic and manual winding
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Approximately 42-hour power reserve
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Durable, dependable, and easy to service
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Trusted in classic and everyday automatic watches
The Miyota 8285 is an excellent choice for those seeking a dependable Japanese automatic movement from one of the world's leading watch manufacturers, offering reliable performance, proven durability, and straightforward maintenance.