The Seiko 4N21-5480 is a watch model based on the 4N21 movement.
Parts List
| SA2A23SN02 | crystal - crystal |
| 6M35D7SNW0 | crown - crown |
| 6M35D7SNG0 | crown - crown |
| 0F150BA1S | case back gasket - case back gasket |
| DE07BW | band - band |
| DE06AW | band - band |
| 2BA055A1BAK | others - minute hand |
| 3BA075F1BA6 | others - second hand |
| 1BA037A1BAK | others - hour hand |
| 0351155 | others - winding stem |
| DZ0040B01 | others - crown and stem gasket |
| 82834230 | others - case ring |
| 4N21548075A | others - case |
| 4N215480 | others - case back |
| 4N2154807EA | others - case |
| 4N212880XS19 | others - dial |
| 4N212880XZ19 | others - dial |
| 4N2164 | others - machine code |
| T090AS | others - push pin |