The Seiko 1N01-5B09 is a watch model based on the 1N01 movement.
Parts List
| K01A04JR02 | crystal - crystal |
| K01A04JR | crystal |
| 6M40A2SNG1 | crown - crown |
| 6M40A2SN | crown |
| 0F150NA1S | case back gasket - case back gasket |
| 0F150NA1 | case back gasket |
| 43X9XZ | band - band |
| 43X9XZ-LKG | band - link |
| 43X9XZ-BK4S | clasp - buckle |
| 3BA075F0BNG | others - second hand |
| 2BG055LABDG | others - minute hand |
| 1BG037LABDG | others - hour hand |
| 0351807 | others - winding stem |
| 1N011D38XL14 | others - dial |
| 1N011D38XS24 | others - dial |
| 1N019 | others - machine code |
| 81606439 | others - bracelet fixing pin |
| 81182699 | others - bracelet fixing pipe |
| 82837320 | others - case ring |
| 1N015B097HZ | others - case |
| 1N015B09 | others - case back |
| DZ0040B01 | others - crown and stem gasket |
Caliber 1N01
