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Miyota Caliber 8203

Miyota Caliber 8203

BrandMiyota (Citizen)
Caliber Number8203, 8203A
Movement TypeAutomatic
Linges11 1/2”’
Diameter
25.6mm
Height5.67mm
Jewels21
Vibrations Per Hour
21,600 bph
Lift Angle
49 degrees
Shock SystemParashock
Power Reserve
~45 hours
Rotor Winding Direction
Counterclockwise (uni-directional)
Hacking?No
Hand-Windable?Yes
Plastic Parts?
Yes
Hand Winding Direction
Clockwise (forward)
FunctionsCentral hours, central minutes, central seconds, bi-lingual day/date calendar at 3:00
Country of ManufactureJapan
Known Brands
Citizen ProMaster (Too many to list, add more in the comments below…)

The Miyota caliber 8203 is a 21 jewel automatic movement, first introduced in 1977 (other versions as early as 1974). This movement is from the Miyota 8200 family (aka 8 or 82 series) of movements. This 8203 has been discontinued by Miyota/Citizen and is no longer offered in their catalog of movements. It has evolved into the current Miyota caliber 8205.

Time and Calendar Setting:

  • You can hand wind the movement while the crown is in position 0.
  • Pull the crown out one click to position 1 to set the calendar. Turn the crown clockwise to advance the day of the week. Rotate the crown counterclockwise to advance the date.
  • Pull the crown out again (position 2) to set the time.
  • Do not set the date while the time is between 9:00pm and 4:00am.

Note: Although the 8203 has a quickset date, this does not mean the date instantly flips over at midnight. In fact, the changeover is not instantaneous, so do not be alarmed if you see a partial date when the hands are before or after 12:00AM.

Replacement Prices:

The Miyota caliber 8203 has been discontinued, therefore replacement retail prices are not available. To find this movement, you will need to find a watch parts retailed with remaining new old stock, find a watch with this caliber inside, or possibly upgrade to a newer version.

Pros and Cons:

Pros:

  • Long history of being built on a dependable movement framework
  • Affordable even when replacing with the newer version

Cons:

  • Non-hacking
  • Some do not like the possible hesitating seconds
  • Discontinued so it’s not easy to find an exact 8203 replacement

Additional Resources:

This caliber listing is incomplete because of the lack of a high quality image. Do you have a Miyota 8203? Please donate a picture here.

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