To look for similar mainsprings that exactly match a specific dimension, select it from the links above.
This mainspring is used by the following movements:
| Movement | Description | Ligne |
|---|---|---|
| Seiko 6730-501R | SEIKO CASE REFERENCE | |
| Seiko 8420-7049 | SEIKO CASE REFERENCE |
This mainspring is similar to that used by the following movements. When values differ the exact value is shown brackets for reference:
| Movement | Mainspring | GR Reference # |
|---|---|---|
| Roamer 520 | 1.30 (1.40) x 0.112 (0.120) x 340 (290) x 10.5 (9.5) mm | |
| Roamer 521 | 1.30 (1.40) x 0.112 (0.120) x 340 (290) x 10.5 (9.5) mm |
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