The Seiko 1N01-0D50 is a watch model based on the 1N01 movement.
Parts List
| 170W12JK01 | crystal |
| 170W12JK | crystal |
| 30MA2NA1 | crown - crown |
| 0A1500B01 | case back gasket |
| EZ0035B0 | case back gasket |
| BHJ83G | band |
| BHA53G | band |
| 3BA075F0BNG | others - second hand |
| 82821620 | others - case ring |
| 1N010D50 | others - case back |
| 1N010D5075 | others - case |
| 1N010E90X925 | others - dial |
| 1N010E90XG15 | others - dial |
| 1N019 | others - machine code |
| A120AS | others - push pin |
| 0351807 | others - winding stem |
| EZ0035B01 | others - crown and stem gasket |
| 2BE052L0BDG | others - minute hand |
| 05T16DGM | others - minute hand |
| 1BE032L0BDG | others - hour hand |
| 05T16DGH | others - hour hand |
Caliber 1N01
