The Seiko 4N00-5221 is a watch model based on the 4N00 movement.
Parts List
| SA0A11JN02 | crystal |
| SA0A11JN | crystal |
| 32M63NN1 | crown - crown |
| 32M63NA1 | crown |
| 0H1400B01 | case back gasket - case back gasket |
| 0H1400B0 | case back gasket |
| B5620K | band |
| B5619K | band |
| B5619K-LKG | band - link |
| B5620K-LKG | band - link |
| B5621K-LKG | band - link |
| B5619J | band |
| B5621K | band |
| B5620K-BK4G | clasp - clasp |
| B5619K-BK4G | clasp - clasp |
| B5621K-BK4G | clasp - clasp |
| T060BS | others - push pin |
| DZ0040B01 | others - crown and stem gasket |
| 0351155 | others - winding stem |
| 4N000551XS19 | others - dial |
| 4N000561XS19 | others - dial |
| 4N000561XS29 | others - dial |
| 4N000571XB14 | others - dial |
| 4N000571XG14 | others - dial |
| 4N000571XS14 | others - dial |
| 4N005221 | others - case back |
| 4N00522125 | others - case |
| 4N00522129 | others - case |
| 4N0061 | others - machine code |
| 82842870 | others - case ring |
| 05Y21NGM | others - minute hand |
| 05Y11DGM | others - minute hand |
| 05Y21AGM | others - minute hand |
| 05Y21NGH | others - hour hand |
| 05Y21AGH | others - hour hand |
| 05Y07DGH | others - hour hand |