Miyota Caliber 1n12

Miyota Caliber 1N12

Miyota Caliber 1n12

ManufacturerMiyota (Citizen)
Caliber Number1N12
TypeQuartz
Lignes8.75”’
Diameter
17mm x 18.5mm
Height
2.58mm thick
Battery Cell Number321 (SR616SW)
Battery Life
~2 years
Frequency32,768Hz
Quartz TypeTuning fork type quartz crystal
Stem065-505 (tap 10)
Hand Sizes1.20mm / .70mm / .18mm
Jewels0
Driving System
Two pole stepping motor
HackingYes
FunctionsCentral hours, central minutes, central seconds, date calendar at 3:00
Country of ManufactureJapan
Known Models Eddie Bauer watch (add your watch to the comments below…)

The Miyota caliber 1N12 is a 0 jewel quartz watch movement. This caliber is made in Japan. The standard version of this movement features a date at 3:00, however, it is also available for watches with a date at 6:00 (designated as caliber 1N12-6). This caliber is sometimes incorrectly typed as 1N21.

1N12 Accuracy

Miyota states the accuracy of the 1N12 movement to be +/-20 seconds/month.

Replacement Price

At the time of this post the replacement prices for the 1N12 were found online for around $9.95.

Examples of watches with this movement

The movement pictured below was submitted by Chris, found in an Eddie Bauer watch. Please list your watch in the comments.

Miyota Caliber 1n12 Movement

Pros VS Cons:

Pros:

  • Unlike Miyota calibers like the 2035, the arm that holds the battery cell down on the 1N12 is not near the coil, so there is less chance of damaging the watch during a battery change.
  • Does not require insulator film under the battery cell as on some Swiss quartz movements.
  • Cheap to replace.

Cons:

  • The arm that holds the battery in place is attached to the main plate of the movement. If it snaps off during a battery change (rare) then you may need to find another watch to keep the battery cell in place.
  • Similar movements in this price range offer a longer battery life – although 2 years is still not too bad. Comment below if Miyota is accurate in claiming 2 years.

Additional Resources:

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Comments & Questions:

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Zs
Zs
1 year ago

Used in Festina F16377

Zachmonoda
Member
6 months ago

I used to like Citizen, now I refuse to even look at them! The 1N12 is one of the apparently many low end calibers Miyota/Citizen made over the years. I just threw a nice Skagen with it in the garbage, because it quit after its maybe 3rd or 4th battery change at age 15 or so. I have a small pile of watches, about a dozen with Seiko/TMI/Hattori calibers, some of these are as old as almost 40 years and still tick, and a couple of Casios, also fully functional! Meanwhile only TWO of my Miyota quartz equipped watches (a… Read more »

CJDUDHF
Member
1 month ago
Reply to  Zachmonoda

In my poinion, Miyota’s 2035(and all 2 series movements) are low end movement but they are high quality. ETA’s low-end quartz movements(like G and 8 series) are very low quality,and the most important thing is they can’t be repaired,if they broke down,you can only install a new movement instead of fixing them, so do tmi’s pc series. The 2035 and all 2 series was to be with a metal wheel train movement, but now in the newer version of the movement,they use plastic wheel train(maybe since 2024 spring). So I am looking for vintage Chinese quartz watches produced by the… Read more »

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