Part of the Miyota Cal. 8200 family, Cal. 82S7 (and the similar Cal. 82D7) is an open heart movement with small seconds and a 24 hour subdial. Cal. 82S7 and 82D7 remain in production as of 2019. Gilt versions are also available. The primary difference between 82S7 and 82D7 is that the latter is better finished, with ribbing on the plates.
Cal. 82S7 is used by Dietrich and SevenFriday.
| No Date | Date Only | Day-Date | |
| Hand Winding | 8270 8N33 SK | 8260 | |
| Automatic Central Seconds | 8228A OH 82S0 PS OH 8N24 SK 8N26 SK HH | 8210 8215 SR 821A | 8200 8203 8205 SR 820A 8285 SR OD |
| Automatic 24 Hour Hand | 8247 82D7 OH | 8217 | |
| Automatic Small Seconds | 8245 82S5 PS OH 8N40 PS | 8218 | |
| Automatic 24 Hour Hand Small Seconds | 82S7 PS OH | 8219 |
- OH = Open Heart at 7:00
- SK = Skeleton
- PS = Partial Skeleton
- HH = High Hands
- OD = Outer Date
- SR = Solid Rotor