Miyota Caliber 8217 21 Jewels

Miyota Caliber 8217

Miyota Caliber 8217 21 Jewels

BrandMiyota (Citizen)
Caliber Number8217
Base Caliber
Miyota 8215
Movement TypeAutomatic
Diameter11 1/2”’ (26mm)
Vibrations Per Hour
21,600 bph
Anti-Shock SystemParashock
Power Reserve
40+ hours
Winding Direction
Uni-directional (left)
Lift Angle49 degrees
Hand Size
1.52mm / 1.0mm / 0.17mm
FunctionsHours, minutes, central seconds, date calendar, 24 hr subdial
Country of ManufactureJapan
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…

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carl scutt
carl scutt
4 years ago

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
3 years ago

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.

3 years ago
Reply to  Tomas Novotny

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
2 years ago

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

2 years ago
Reply to  Caliber Corner

Půl roku používám v hodinkách OOO a zatím naprostá spokojenost!!!

Vladyslav Nazarov
Vladyslav Nazarov
1 year ago

Miyota 8203 what is this movement? There is nothing written about this on your site.

10 months ago

I have the Bering 16243-462 with this movement only a 15sec gain in a 48 hr period and power reserve is accurate as well 41 has last time I left the watch without moving it.

7 months ago

My Boldr Wayfarer Khaki uses this movement. The rotor’s movement is very audible in daily life. It may bother some, but for me it adds a bit of character and serves as a reminder that I’m wearing a very sophisticated piece of machinery on my wrist.

Bernard Stefan
Bernard Stefan
3 months ago

I have a Iron Annie Pilotwatch from Pointtec made in Ruhla (Germany) with this movement and I love it. Single negative point is if I do not use it the time difference increases by 15 sec/day if I wear it the difference might be about 2 sec/day. So the watch wants to be weared otherwise its revenge is huge.

1 month ago

I have a Boldr Venture Auto with this movement. So far so good

Venus Caliber 178
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