Miyota Caliber 0S21 Quartz Watch Movement

Miyota Caliber 0S21

Miyota Caliber 0S21 Quartz Watch Movement

ManufacturerMiyota (Citizen)
Caliber Number0S21 aka OS21
TypeQuartz
Replaces CaliberCitizen 0510
Diameter13.50”’ (30.80mm)
Height
5.10mm
Battery Cell NumberSR927W
Frequency32,768Hz
Quartz TypeTuning fork type quartz crystal
Stem065-453
Hand Sizes120/80/18
Jewels0
FunctionsHours, minutes, central chronograph seconds, 60 minute counter, 24 hour hand, date
Country of ManufactureJapan
Known Models
REC, Philip Stein Active Chronograph

The Miyota caliber OS21 is a quartz watch movement with zero jewels. It is made in Japan.

Accuracy Rating

Miyota states the accuracy of this movement to be +/-20 seconds/month.

Additional Resources:

Watches with the Miyota 0S21

You are reading Caliber Corner, the most popular resource for watch movement pics, specs and opinions, including mods and DIY repairs. CC is a watch geek community for gear turning and caliber learning! Check the front page for the latest caliber listings and follow Caliber Corner on Twitter, Instagram and Facebook. Subscribe to our YouTube channel for close-up movement videos. Join our mission to spread movement awareness. Sign up!
What do you think about Miyota Caliber 0S21? Keep comments respectful and follow our community guidelines.
Subscribe
Notify of
guest
14 Comments
Inline Feedbacks
View all comments
ewr
ewr
4 years ago

Why did you white the battery?

Marius
Marius
3 years ago

Is there any chance I can order this mechanism?

Archie Burton
Archie Burton
3 years ago

Hi I am looking for a set of hands for a Miyota OS21 movement, they would not seem to be standard hands and sit down through the dial. Can you help? I have a picture of the actual hands

trackback
News: Dugena Dakota Chronograph - Retro-Design zum moderaten Preis - zeigr.com
2 years ago

[…] bekannten Uhrenmarken – nicht nur bei Citizen. In der Dugena Dakota arbeitet übrigens ein Miyota OS21. Alles in allem kann man also sagen, dass man hier vernünftige Qualität zu einem vernünftigen […]

trackback
Retro-Uhren unter 200 Euro: Dugena Dakota & Kemora - zeigr.com
2 years ago

[…] lag immer leicht neben der Minuten-/Sekunden-Markierung. Und was wahrscheinlich mit dem Werk (Miyota OS21) zusammenhängt: Beim Starten der Stoppuhr „klickt“ der Drücker, beim Stoppen […]

trackback
Are Miyota (Citizen) OS20 Movements Swappable with Seiko VK63 Mecaquartz?
1 year ago

[…] interesting, I was going by Caliber, which apparently incorrectly shows they are the same size?Miyota Caliber 0S21 Watch Movement | CaliberCorner.comHattori SII Caliber VK63 Watch Movement | CaliberCorner.com So it seems they are not both 0.80mm […]

Christopher Darway
Christopher Darway
1 year ago

Looking for 0S10 caliber for Boccia Do you still have these in stock?

Lokman
Lokman
9 months ago

Is the OS21 Chrono movement considered as mecha quartz? I.e with sweeping chrono hand movement

Evil
Evil
3 months ago

I just bought an obvious fake hubot big bang with the miyota 0s21.
One day old and working very nicely

trackback
New Watch Alert: 8/28/2020 - The Truth About Watches
1 month ago

[…] you can guess from the price, it holsters a quartz movement: the Miyota 0S21. The accuracy’s more-than-merely-adequate  (+/-20 seconds per month) there’s lume in […]

Mirko
Mirko
14 days ago

Che tipo di batteria va montata?

14
0
Would love your thoughts, please comment.x
()
x