The Seiko 4N21-5330 is a watch model based on the 4N21 movement.
Parts List
| SA2A45SN02 | crystal - crystal |
| 6M30B5NNG2 | crown - crown |
| 0F160BA1S | case back gasket - case back gasket |
| D0R8AQ | band - band |
| D0R8FQ | band - band |
| 3BA050F1BNG | others - second hand |
| 1BA030A1BNG | others - hour hand |
| 2BA045A1BNG | others - minute hand |
| 0351155 | others - winding stem |
| DZ0040B01 | others - crown and stem gasket |
| 81606439 | others - bracelet fixing pin |
| 81190875 | others - bracelet fixing pipe |
| 81606679 | others - bracelet fixing pin |
| 81190155 | others - bracelet fixing pipe |
| 4N21533075A | others - case |
| 82835350 | others - case ring |
| 4N215330 | others - case back |
| 4N2153307EA | others - case |
| 4N212200XL14 | others - dial |
| 4N212200XS14 | others - dial |
| 4N2164 | others - machine code |