The Seiko V400-0640 is a watch model based on the V400 movement.
Parts List
| 160A13LN03 | crystal |
| 6M30A3NNG3 | crown - crown |
| 0F150BAA5 | case back gasket - case back gasket |
| F049DM | band - metal band |
| 1DG030LABNG | others - hour hand |
| 2DG045LABNG | others - minute hand |
| 0351155 | others - winding stem |
| 81606439 | others - bracelet fixing pin |
| 81190075 | others - bracelet fixing pipe |
| 81607559 | others - bracelet fixing pin |
| DZ0040B01 | others - crown and stem gasket |
| 05R39NGM | others - minute hand |
| 05R39NGH | others - hour hand |