Miyota 8215
Factory specs
- Caliber
- 8215
- Made in
- Japan
- Frequency
- 21,600 bph (3 Hz)
- Power reserve
- 42 h
- Jewels
- 21
- Hacking
- Yes
- Hand winding
- Yes
- Accuracy
- -20 / +40 s/day
- Diameter
- 26 mm
- Height
- 5.67 mm
- Functions
- Hours, Minutes, Seconds, Date
- Equivalent to
- Miyota 821A
- Same family
- Miyota 8205, Miyota 8217, Miyota 821A, Miyota 8285, Miyota 82S0, Miyota 82S5, Miyota 82S7, Miyota 8315, Miyota 8N24, Miyota 8N33
Miyota's standard mechanical workhorse. Factory spec: 11½ lignes (the spec sheet marks Φ26.00mm), 5.67mm high, 21 jewels, 21,600 vph, about 42h running time, accuracy -20 to +40 s/day, posture difference under 50 s, lift angle 49°, automatic and hand winding, quick date. Hacking: Miyota's current product page lists a stop-second device, but Caliber Corner reports Miyota only added stop-seconds to the 82 family around 2018-2019, so many 8215s in older or existing watches do not hack. Seconds are driven indirectly, so the seconds hand can stutter or wobble. 8205 is the day-date version; 821A is the decorated version (see miyota-821a).





































































































