The Seiko 4N00-6520 is a watch model based on the 4N00 movement.
Parts List
| ES3A43JN02 | crystal - crystal |
| ES3A42JN02 | crystal |
| ES3A42JN | crystal |
| 6M30B9NNG1 | crown - crown |
| 6M30B9NN | crown |
| 0F140BA1S | case back gasket - case back gasket |
| 0F140BA1 | case back gasket |
| 4320BQ | band |
| 4347BQ-LKG | band - link |
| 4320BQ-LKG | band - link |
| 4347BQ | band |
| 4347BQ-BK4G | clasp - clasp |
| 4320BQ-BK4G | clasp - clasp |
| 2CE052L0BDG | others - minute hand |
| 1CE037LABDG | others - hour hand |
| 2CH055A1BNG | others - minute hand |
| 1CH037A1BNG | others - hour hand |
| 0351155 | others - winding stem |
| 81606439 | others - bracelet fixing pin |
| 81190075 | others - bracelet fixing pipe |
| 81606459 | others - bracelet fixing pin |
| 81607559 | others - bracelet fixing pin |
| 82870870 | others - case ring |
| 4320BQ-EPG | others - endpiece |
| 4347BQ-EPG | others - endpiece |
| DZ0040B01 | others - crown and stem gasket |
| 4N004540XB14 | others - dial |
| 4N004540XG14 | others - dial |
| 4N004550XS24 | others - dial |
| 4N004580XB14 | others - dial |
| 4N004580XG14 | others - dial |
| 4N004580XS14 | others - dial |
| 4N0061 | others - machine code |
| 4N006520 | others - case back |
| 4N00652075A | others - case |
| 4N00652075B | others - case |