Miyota Caliber 8215 Watch Movement

Brand	Miyota (Citizen)
Caliber Number	8215
Movement Type	Automatic
Linges	11 1/2”’
Diameter	26mm
Height	5.67mm (7.4 overall)
Min Case Diameter	30.3mm
Min Case Thickness	9.92mm
Dial Feet	5:30 and 10:30
Jewels	21
Vibrations Per Hour	21,600 bph
Lift Angle	49 degrees
Shock System	Parashock
Power Reserve	40 hours
Rotor Winding Direction	Counterclockwise (uni-directional)
Hacking?	No
Hand-Windable?	Yes
Hand Winding Direction	Clockwise (forward)
Balance Staff	039-1020 (Citizen)
Stem	065-212, tap 10 (Citizen)
Hand Sizes	1.52mm / 1.0mm / 0.17mm
Functions	Hours, minutes, central seconds, date calendar at 3:00 or 6:00
Country of Manufacture	Japan
Known Brands	Invicta, Vostok, Panzera Aquamarine 45, Festina, Jacques Lemans, Ballast Trafalgar, AVI-8 Flyboy Bronze, Timex Marlin (Too many to list, add your watch in the comments below…)

The Miyota caliber 8215 is a 21 jewel automatic movement, first introduced in 1977. It is made in Japan and is found in many new microbrand watches because it is easily obtainable, low cost, and considered an entry level workhorse movement.

This movement is also available in gold tone: 8215 Gilt.

Some of the topics covered in this caliber listing:

Caliber 8215 VS 8205:

There is a caliber 8205 which is virtually the same movement as the caliber 8215 but with an additional day complication next to the date.

Accuracy & Power Reserve:

Miyota claims the caliber 8215 has an accuracy rating of -20 ~ +40 seconds per day. This is only measured within 10 to 60 minutes from a full power reserve. To achieve full power reserve, hand-wind the crown 40 times. Power reserve or fully wound running time is about 42 hours.

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 time. Pull the crown out again to position 2 to set the date. Do not set the date while the time is between 9:00pm and 1:00am.

Calendar Variations:

There are three calendar variations available from the factory:

8215-21A – Date window at 3:00. Square window. Datewheel: White background with black text.
8215-1AV – Date window at 3:00. Square window. Dateweel: Black background with white text. Special order with about 2 months lead time from Miyota.
8215-1TH – Date window at 6:00. Square or round window. Datewheel: White background with black text.

Hesitating Seconds:

The Miyota 8215 is one of the modern automatic movements that experiences a stuttering or hesitating second hand due to the indirect-drive system for running the central seconds. Learn all about Miyota “stuttering” seconds here.

Replacement Prices:

Replacement prices were found online in the $40-50 range for individual movements. When ordering wholesale, the caliber 8215 comes in packages of 300. They are available with a higher quality “fine finishing.” Although the plastic movement holder (part 500-710) is more common in affordable watches, this is interchangeable with a metal ring (502-008).

Click here to buy a replacement Miyota 8215 movement for your watch.