The Seiko B004-4000 is a watch model based on the B004 movement.
Parts List
| BA2N53LM10 | crystal |
| BA2N53LM50 | crystal |
| 35M65NA1 | crown |
| 35M65NS1 | crown |
| EB0055B01 | others - crown and stem gasket |
Other models with the same movement
| B004-400A |
| B004-5000 |
| B004-5009 |
| B004-5010 |
| B004-5020 |