Miyota Caliber 82S3

Manufacturer	Miyota
Caliber Number	82S3
Movement Type	Automatic, self-winding mechanical
Lignes	11.5”’
Diameter	26mm
Height	5.67mm
Jewel Count	21 jewels
Beat Rate / Frequency	21,600 bph / 3 Hz
Lift Angle	49 degrees
Power Reserve	~42 hours
Rotor Winding Direction	Counterclockwise
Hand-Windable?	Yes
Anti-Shock Device	Parashock
Stem Part #	065.212
Hand Count	4
Hand Sizes	1.52mm (hrs) / 1mm (mins) / .17mm (secs) / .17mm (24 hrs)
Functions	Central hours; central minutes; central sweeping seconds; pointer style 24 hour indicator subdial at 9:00; open balance wheel at 7:00
Hacking Seconds?	Yes
Country of Manufacture	Made in Japan
Known Models	(Add your watch to the comments below…)

The Miyota caliber 82S3 is an automatic movement with a 24 hour indicator at 9:00 and a skeletonized balance wheel at 7:00.

This caliber features Miyota’s “Fine” finishing. The open rotor has the following text: TWENTY-ONE 21 JEWELS / MIYOTA / JAPAN / CWMJ

24 Hour Hand:

The 24 hour subdial at 9:00 serves as a day/night indicator or military time. The hand is not set independently – it follows the main hours hand.

Gilt Version:

There is a gilt (gold tone) version referred to as “82S3 Gilt”. Most brands using the gilt version will simply call it an 82S3. The only difference between the two is the color of the movement.

Accuracy Rating:

According to Miyota, the average accuracy of the 82S3 is -20 to +40 seconds per day, when operating under normal conditions.

When testing for accuracy of your timing machine, the correct lift angle is 49 degrees.

Similar Calibers:

The calibre 82S3 is part of the 8200 family, but more specifically, the 82S series of time-only open balance wheel movements. 82S5 shares specs with the following:

• 82S0 – Central hours, mins, secs
• 82S3 – 24 hour indicator at 9:00
• 82S5 – Small seconds at 4:30
• 82S7 – Small seconds at 4:00, 24 hour indicator at 9:00

Additional Resources:

• 82S3 technical drawings (pdf)
• 8S23 instructions (pdf)
• More Miyota mentions