The Seiko 4N01-0231 is a watch model based on the 4N01 movement.
Parts List
| 160A02J20A | crystal - crystal |
| 160A02J2 | crystal |
| 32M63NN1 | crown - crown |
| 0F140BAA | case back gasket |
| 0F140BAA3 | case back gasket - case back gasket |
| WFA25J | band |
| 3BA075F1BNG | others - second hand |
| A100BS | others - push pin (for mb) |
| 4N010230 | others - case back |
| 4N0102317E | others - case |
| 4N010401XB14 | others - dial |
| 4N0161 | others - machine code |
| 82841570 | others - case ring |
| DZ0040B01 | others - crown and stem gasket |
| 0351155 | others - winding stem |
| 06T23DGH | others - hour hand |
| 06T23DGM | others - minute hand |
| 07SC04NG | others - second hand |