Miyota Caliber 82S7 Watch Movement

Brand	Miyota (Citizen)
Caliber Number	82S7
Movement Type	Automatic, self-winding mechanical
Lignes	11 1/2”’
Diameter	26mm
Height	5.67mm
Jewels	21
Vibrations Per Hour	21,600 bph
Anti-Shock System	Yes
Power Reserve	42+ hours
Hand-Windable?	Yes
Hand-Winding Direction	Clockwise
Rotor Winding Direction	Counterclockwise
Hacking Seconds?	No
Lift Angle	49 degrees
Stem	065-212
Plastic Movement Holder	500-710
Dial Screws	929-610
Hand Sizes	1.52mm / 1.0mm / 0.17mm
Functions	Central hours; central minutes; small seconds subdial between 4:00 and 5:00; 24 hour indicator at 9:00; open balance wheel at 7:00
Country of Manufacture	Japan
Known Models	SevenFriday V Series, Dietrich OT-1, Dietrich OT-2, Ancon X-35, CODE41 Anomaly-01 (Add your watch in the comments below…)

The Miyota caliber 82S7 is from the 8215/821A family but offers a skeletonized dial design. There is also a gilt version available.

Some of the topics covered in this caliber listing:

Accuracy:

Miyota claims that the caliber 82S7 offers accuracy of -20 ~ +40 seconds per day. This is measured within 10-60 minutes from a full wind via the crown. To fully wind the movement, turn the crown 40 times in the clockwise direction. The winding direction of the rotor is counterclockwise.

82S7 vs 82S0:

A more “minimalist” version of the caliber 82S7 is the caliber 82S0. The 82S0 is basically the same movement but has central seconds instead of the small seconds subdial. The 82S0 also does not have the 24 hour subdial.