The Seiko 1N00-5D90 is a watch model based on the 1N00 movement.
Parts List
| ESLN44JN01 | crystal |
| ESLN44JN | crystal |
| 30M98NA1 | crown |
| 0H1800B01 | case back gasket - case back gasket |
| 0H1800B0 | case back gasket |
| BHA56K | band |
| 1CB055L0BDG | others - hour hand |
| 2CB080L0BDG | others - minute hand |
| 0351807 | others - winding stem |
| 1N001G68XB14 | others - dial |
| 1N001G68XS14 | others - dial |
| 1N005D90 | others - case back |
| 1N005D9025Z | others - case |
| 1N009 | others - machine code |
| 82830600 | others - case ring |
| A120AS | others - push pin |
| DZ0041B01 | others - crown and stem gasket |
| 08V32DGM | others - minute hand |
| 08V32DGH | others - hour hand |
Caliber 1N00
