The Seiko 1N01-0D20 is a watch model based on the 1N01 movement.
Parts List
| 170W06JM01 | crystal |
| 30MA2NA1 | crown - crown |
| 0A1500B01 | case back gasket |
| EZ0035B0 | case back gasket |
| BHA53E | band |
| BHA52J | band |
| 3BA075F0BNG | others - second hand |
| 1BF047L0BDG | others - hour hand |
| 0351807 | others - winding stem |
| 82821620 | others - case ring |
| 1N010D20 | others - case back |
| 1N010D207EZ | others - case |
| 1N010D20WG | others - case |
| 1N010E88XB15 | others - dial |
| 1N010F00XG24 | others - dial |
| 1N019 | others - machine code |
| A120AS | others - push pin |
| EZ0035B01 | others - crown and stem gasket |
| 2BF070L0BDG | others - minute hand |
| 2BE055L0BDG | others - minute hand |
| 05T18DGM | others - minute hand |
| 1BE035L0BDG | others - hour hand |
| 05T18DGH | others - hour hand |
| 07T55DGM | others - minute hand |
| 07T55DGH | others - hour hand |
Caliber 1N01
