The Seiko 1N01-0B40 is a watch model based on the 1N01 movement.
Parts List
| 160W10JM01 | crystal |
| 160W10JM | crystal |
| 30MA2NA1 | crown - crown |
| 0A1500B01 | case back gasket |
| EZ0035B0 | case back gasket |
| 4332AB | band - metal band |
| M5106S | band |
| M5102S | band |
| 07SC02NG | others - second hand |
| 3BA075F0BNG | others - second hand |
| 0351807 | others - winding stem |
| 82821520 | others - case ring |
| 1N010B40 | others - case back |
| 1N010B4079 | others - case |
| 1N010B80X914 | others - dial |
| 1N010E10XN14 | others - dial |
| 1N019 | others - machine code |
| B080AS | others - push pin |
| EZ0035B01 | others - crown and stem gasket |
| 06T04AGM | others - minute hand |
| 2BG060L0BDG | others - minute hand |
| 06T07DGM | others - minute hand |
| 07T04AGH | others - hour hand |
| 1BG040L0BDG | others - hour hand |
Caliber 1N01
