The Seiko 1F21-5030 is a watch model based on the 1F21 movement.
Parts List
| ES4A21SN02 | crystal - crystal |
| 6M35A2SNGB | crown - crown |
| 6M35A2SNWD | crown - crown |
| 0F140BA1S | case back gasket - case back gasket |
| 81503607 | band - other |
| D0Q8AB | band - band |
| D0Q8BB | band - band |
| 1BC035A1BAF | others - hour hand |
| 2BC055A1BAF | others - minute hand |
| 1BA035A1BAK | others - hour hand |
| 2BA055A1BAK | others - minute hand |
| 3BA075F1BA6 | others - second hand |
| 0351807 | others - winding stem |
| 81503609 | others - screw |
| 1F21503076A | others - case |
| 82835270 | others - case ring |
| 81610247 | others - bracelet fixing pin |
| 816120249 | others - bracelet fixing pin |
| 1F215030 | others - case back |
| 1F2150307EA | others - case |
| 81610249 | others - bracelet fixing pin |
| 1F210120XS14 | others - dial |
| 1F210130XA19 | others - dial |
| 1F215 | others - machine code |
| DZ0040B01 | others - crown and stem gasket |