The Seiko 4N00-0020 is a watch model based on the 4N00 movement.
Parts List
| 180A02JN02 | crystal - crystal |
| 170N63JN01 | crystal |
| 170A02JN02 | crystal - crystal |
| 32M63NN1 | crown - crown |
| 32M63NA1 | crown |
| 0H1700B01 | case back gasket - bezel gasket |
| 0H1700B0 | case back gasket |
| Q5035G | band |
| Q5035G-LKG | band - link |
| Q5035G-BK4G | clasp - clasp |
| 1CG047LABDG | others - hour hand |
| 2CG067LABDG | others - minute hand |
| 82832995 | others - case ring |
| 4N000020 | others - case back |
| 4N000020CH | others - case |
| 4N000120XS29 | others - dial |
| 4N000130XB14 | others - dial |
| 4N000130XG14 | others - dial |
| 4N0061 | others - machine code |
| 06Y01DGH | others - hour hand |
| 0351156 | others - winding stem |
| Q5035G-EPG | others - endpiece |
| DZ0040B01 | others - crown and stem gasket |
| 81181459 | others - bracelet fixing pipe |
| 81604219 | others - bracelet fixing pin |
| 06Y01DGM | others - minute hand |
| 06Y15CGM | others - minute hand |
| 06Y15CGH | others - hour hand |