Miyota 82S7
Factory specs
- Caliber
- 82S7
- Made in
- Japan
- Frequency
- 21,600 bph (3 Hz)
- Power reserve
- 42 h
- Jewels
- 21
- Hacking
- —
- Hand winding
- Yes
- Accuracy
- -20 / +40 s/day
- Diameter
- 26 mm
- Height
- 5.67 mm
- Functions
- Hours, Minutes, Small seconds, Open heart
- Same family
- Miyota 8205, Miyota 8215, Miyota 8217, Miyota 821A, Miyota 8285, Miyota 82S0, Miyota 82S5, Miyota 8315, Miyota 8N24, Miyota 8N33
The 24-hour member of the 8215/821A-based open-heart series (82S0 has central seconds, 82S5 small seconds): central hours and minutes, small seconds between 4 and 5 o'clock, a 24-hour indicator at 9 (the functions list has no value for it) and an open balance at 7. Figures from Caliber Corner: 11½ lignes (Φ26mm), 5.67mm high, 21 jewels, 21,600 vph, 42h+ power reserve, accuracy -20 to +40 s/day, lift angle 49°, hand winding (clockwise), rotor winding counterclockwise, Parashock. Caliber Corner lists the 82S7 as non-hacking, while the 82S0 and 82S5 entries record a stop-second device added around mid-2019, so hacking is left blank. Miyota's own site was down for maintenance on 2026-10-25; the base figures agree with the shared 82S0/82S5/82S7 spec sheet recorded in miyota-82s0. Citizen uses the same caliber as its 4197.
Watches with the Miyota 82S7
| Watch | Price from | Movement | Dia. mm | Thick mm | Crystal | Micro-adjust |
|---|---|---|---|---|---|---|
 Cadisen C8102 |
$130 | Miyota 82S7 | 42 | 12 | Sapphire | no bracelet |
 Pook Watches Nightwish Yesterwynde |
$560 | Miyota 82S7 | 41 | 13 | Sapphire | — |