セイコーBell-maticに使われるムーブメント
日本名：ベルマチック
Released in 1966 until around 1978, these are watches with a mechanical alarm. The alarm is powered by a separate mainspring which runs for around 10 seconds.
| ムーブメント |
|---|
| 4005 |
| 4006 |
日本名：ベルマチック
Released in 1966 until around 1978, these are watches with a mechanical alarm. The alarm is powered by a separate mainspring which runs for around 10 seconds.
| ムーブメント |
|---|
| 4005 |
| 4006 |