GENUINE MAIN SPRING
For Seiko Y749-4020
MS-810H
Movement Listing
This part is also used by the following movements:
| Movement | Description | Ligne |
|---|---|---|
| Ronda 211A | PIN LEVER W/O SEC 18,000 BPH | 12 |
| Seiko 1100-4279 | SEIKO CASE REFERENCE | |
| Seiko 9020-5480 | SEIKO CASE REFERENCE |
