The Seiko 1N00-0H20 is a watch model based on the 1N00 movement.
Parts List
| 165W10JK01 | crystal |
| 165W10JK | crystal |
| 30MA2NA1 | crown - crown |
| 0A1500B01 | case back gasket |
| EZ0035B0 | case back gasket |
| Q5065G | band |
| Q5065C-LKG | band - link |
| Q5065G-LKG | band - link |
| Q5065C | band |
| Q5065G-BK4G | clasp - clasp |
| Q5065C-BK4G | clasp - clasp |
| 1CE035L0BDG | others - hour hand |
| 2CE052L0BDG | others - minute hand |
| 0351807 | others - winding stem |
| 81606439 | others - bracelet fixing pin |
| 81180229 | others - bracelet fixing pipe |
| 82821520 | others - case ring |
| 1N000H20 | others - case back |
| 1N000H207H | others - case |
| 1N000H20RH | others - case |
| 1N002F90XB15 | others - dial |
| 1N002F90XG15 | others - dial |
| 1N002F90XS15 | others - dial |
| 1N009 | others - machine code |
| Q5065C-EPG | others - endpiece |
| Q5065G-EPG | others - endpiece |
| EZ0035B01 | others - crown and stem gasket |
| 05Y04DGM | others - minute hand |
| 05Y04DGH | others - hour hand |
Caliber 1N00
