The Seiko 1N00-5G4A is a watch model based on the 1N00 movement.
Parts List
| REEN30JK01 | crystal |
| REEN30JK | crystal |
| 30MB4NB1 | crown |
| 30MB4NA1 | crown |
| 0H2001B03 | case back gasket |
| 0H2001B0 | case back gasket |
| ZKJ28N | band |
| ZKJ28Y | band |
| 82832200 | others - case ring |
| 1N002C88XS14 | others - dial |
| 1N005G4A | others - case back |
| 1N005G4A25Y | others - case |
| 1N005G4A25Z | others - case |
| 1N009 | others - machine code |
| A140BS | others - push pin |
| 0351807 | others - winding stem |
| DZ0041B01 | others - crown and stem gasket |
| 1CE030L0BDG | others - hour hand |
| 05Y32DGH | others - hour hand |
| 2CE050L0BDG | others - minute hand |
| 05Y32DGM | others - minute hand |
Caliber 1N00
