The Seiko 1N00-5A89 is a watch model based on the 1N00 movement.
Parts List
| ESLN18JN01 | crystal |
| ESLN18JN | crystal |
| 30M98NA1 | crown |
| 0H1500B01 | case back gasket - case back gasket |
| 0H1500B0 | case back gasket |
| 0351807 | others - winding stem |
| 82821840 | others - case ring |
| 1N000C68XS24 | others - dial |
| 1N005A89 | others - case back |
| 1N005A8925 | others - case |
| 1N009 | others - machine code |
| T060BS | others - push pin |
| 03Y06DGM | others - minute hand |
| DZ0041B01 | others - crown and stem gasket |
| 03Y06DGH | others - hour hand |
Caliber 1N00
