Miyota Caliber 8217 21 Jewels

Miyota Caliber 8217

Miyota Caliber 8217 21 Jewels

Brand Miyota (Citizen)
Caliber Number 8217
Base Caliber
Miyota 8215
Movement Type Automatic
Diameter 11 1/2”’ (26mm)
Height 5.67mm
Jewels 21
Vibrations Per Hour
21,600 bph
Anti-Shock System Parashock
Power Reserve
40+ hours
Winding Direction
Uni-directional (left)
Hacking No
Lift Angle 49 degrees
Stem 065-212
Hand Size
1.52mm / 1.0mm / 0.17mm
Functions Hours, minutes, central seconds, date calendar, 24 hr subdial
Country of Manufacture Japan
Known Models
Too many to list… (add yours in the comments below)

The Miyota caliber 8217 is from the 8215/821A family.

What differentiates this caliber?

Aside from the hours/minutes/central seconds and date, this movement has a 24 hour subdial at 9:00.


Miyota claims that the caliber 8217 offers accuracy of -20 ~ +40 seconds per day.


Another movement that is similar is the Citizen caliber 4166.

Here is the 26mm Miyota 8217 movement in a 46mm Szanto Big Aviator watch:

Miyota Caliber 8217 Movement

The photo below is of a Miyota caliber 8217 found in this AVI-8 Hawker Hunter watch here.
Miyota caliber 8217

Rotor Action

More watches with the Miyota 8217:

Extra Info:

Do you have a watch powered by the Miyota caliber 8217? Let us know your experience in the comments below…

Is the Miyota Caliber 8217 any good? Share your opinions, experiences and watches below... Remember to keep comments respectful and follow our community guidelines.

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carl scutt
carl scutt

Have you ever known a more versatile and widely used movement then the Miyota caliber by Citizen? There are so many watches using this movement it seems like the default movement for any watchmaker creating an accurate, reliable, and super affordable timepiece.

Tomas Novotny
Tomas Novotny

I just bought Ingersol I02802 the Apsley and it is equipped with this movement from Miyota cal. 8217 after three days on my hand (also overnight) it gained 18 secs. against the atomic watch – amazing.


I also have an Ingersoll but it has a Chinese Seagull style automatic movement. I didn’t know you could get a Miyota in an Ingersoll. The will totally take their brand to the next level imho.

Ian done
Ian done

Pointtec use this movement in their “Zeppelin 24hr Automatic” 8668 watch