The Seiko 1N01-5G40 is a watch model based on the 1N01 movement.
Parts List
| RE2N44GN00 | crystal |
| 30MK8NA4 | crown - crown |
| 30MK8NN4 | crown - crown (3h) |
| 0E180BA1S | case back gasket - case back gasket |
| 4KN4KB | band - leather band |
| 4KN5KB | band - leather band |
| 4J43KB | band - band |
| 4J42KB | band - leather band |
| 4J42YB | band - band |
| 3BA075F1BNG | others - second hand |
| 2BC055A1BAA | others - minute hand |
| 2BA057A1BNG | others - minute hand |
| 2BC052A0BAA | others - minute hand |
| 1BC037A0BAA | others - hour hand |
| 1BC035A1BAA | others - hour hand |
| 82833600 | others - case ring |
| 0351807 | others - winding stem |
| 1BA040A1BNG | others - hour hand |
| 1N015G4001B | others - case |
| 1N015G40 | others - case back |
| 1N015G4001D | others - case |
| 1N015G4002B | others - case |
| 1N010SA8XS14 | others - dial |
| 1N011V68XB14 | others - dial |
| 1N011V68XG14 | others - dial |
| 1N011V78XS19 | others - dial |
| 1N019 | others - machine code |
| S140BS | others - push pin |
| EZ0035B01 | others - crown and stem gasket |
Caliber 1N01
