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Miyota Caliber 8247

Miyota Caliber 8247

Miyota Caliber 8247

BrandMiyota (Citizen)
Caliber Number8247
Base Caliber
Miyota 8215
Movement TypeAutomatic
Lignes11 1/2”’
Diameter
26mm
Casing Diameter
25.6mm
Height5.67mm
Jewel
21
Vibrations Per Hour
21,600 bph
Power Reserve
40 hours
Lift Angle49 degrees
Stem065-212
Movement Holder
500-710
Hand Size
1.52mm / 1.0mm / .17mm / .17mm
Anti-Shock System
Parashock
Hacking Seconds?
No
Hand-Winding?
Yes
Hand Count
4
FunctionsCentral hours; central minutes; small seconds subdial between 4:00 and 5:00, 24 hour hand at 9:00
Country of ManufactureJapan
Known Models
(Add your watch in the comments below)

The Miyota caliber 8247 is an automatic watch movement with a small seconds and calendar complications. This movement is from the affordable 8 Series family of what Miyota refers to as “Standard Automatics”, further categorized as “Small Hands”. As of 8/2022, this caliber is no longer present in Miyota’s current catalog.

Small Seconds:

Cal. 8247 is based off of 8215/821A framework but with a small seconds subdial in the 4:30 region rather than a central sweeping seconds hand. This small seconds hand option may be a good solution to the Miyota jumping seconds that so many watch collectors experience with other 82XX calibers. Since the seconds hand is smaller and not centralized, any stuttering or jumping may not be as noticeable. Please comment below if you have this caliber and have experiences it.

Miyota 8247 VS 8245:

There is a similar caliber 8245 with the main difference being that the 8247 has an additional 24 hour hand complication located at 9:00. Other than that, these two calibres are the same.

8245 VS 8218:

The caliber 8218 is the same as the 8245 but without a calendar complication. The caliber 8218 has a date at 3:00.

Accuracy & Power Reserve:

Miyota claims that the caliber 8247 offers accuracy of -20 ~ +40 seconds per day under normal operating temperatures, and when measured with a full power reserve.

“Accuracy of the mechanical watch is different from the daily rate of the quartz watch and the accuracy will change maximum of several ten seconds during rewinding the spring, then the accuracy of the half winding condition will be different from that of full winding condition.” -Miyota official tech sheets

When fully wound, the power reserve is about 40 hours of running time. To reach full power reserve via manual winding, turn the crown 40 times.

Replacement Prices:

At the time of this post, replacement prices for the caliber 8247 were found online in the range of $49.95 – $56.58 USD. Supply seems to be limited since this exact caliber number appears to be discontinued and no longer offered by Miyota.

Additional Resources:


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Miyota Caliber 8245 Watch Movement | Caliber Corner
1 month ago

[…] is a similar Miyota caliber 8247 with the main difference being that the 8247 has an additional 24 hour hand complication located at […]

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Miyota Caliber 8219 Watch Movement | Caliber Corner
1 month ago

[…] is a similar caliber 8247 with the main difference being that the cal. 8219 has a date at 3:00. The caliber 8247 is the same as the 8219 but without a date […]

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Miyota Watch Movements (List) Watch Movement | Caliber Corner
1 month ago

[…] 8247 – Small seconds subdial at 4:30, 24 hour hand at 9:00 […]

Oliver Filby
Oliver Filby
16 days ago

Used in the Fossil Townsman series of watches.
Miyota Stuttering still visible on seconds subdial, but less noticeable.

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Venus Caliber 178
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