The Seiko 1N00-5J20 is a watch model based on the 1N00 movement.
Parts List
| K01W04JN01 | crystal |
| K01W04JN | crystal |
| 30MA2NA1 | crown - crown |
| 0A1500N01 | case back gasket |
| EZ0035B0 | case back gasket |
| Z5483G | band |
| Z5483G-LKG | band - link |
| Z5483G-BK4G | clasp - clasp |
| 0351807 | others - winding stem |
| 81606439 | others - bracelet fixing pin |
| 81180229 | others - bracelet fixing pipe |
| 82830340 | others - case ring |
| 1N002G70XB15 | others - dial |
| 1N002G70XG25 | others - dial |
| 1N002G80XB14 | others - dial |
| 1N002G80XG24 | others - dial |
| 1N005J20 | others - case back |
| 1N005J2075 | others - case |
| 1N009 | others - machine code |
| EZ0035B01 | others - crown and stem gasket |
| 1CE030L0BDG | others - hour hand |
| 05Y32DGH | others - hour hand |
| 2CE050L0BDG | others - minute hand |
| 05Y32DGM | others - minute hand |
Caliber 1N00
