The Seiko 1F21-5F30 is a watch model based on the 1F21 movement.
Parts List
| SA3A25SN02 | crystal - crystal |
| 6M30X3SNGA | crown - crown |
| 0F150BA1S | case back gasket - case back gasket |
| D1R4BQ | band - band |
| D1R4BQ-BK00 | clasp - clasp |
| 3BA050F1BNG | others - second hand |
| 1BA035A1BAK | others - hour hand |
| 1BA035A1BNG | others - hour hand |
| 2BA050A1BAK | others - minute hand |
| 2BA050A1BNG | others - minute hand |
| 3BA050F1BAL | others - second hand |
| 81190055 | others - bracelet fixing pipe |
| 81602669 | others - bracelet fixing pin |
| 1F215F3001A | others - case |
| 82842940 | others - case ring |
| 1F215F30 | others - case back |
| 1F212D10XG14 | others - dial |
| 1F212D20XA19 | others - dial |
| 1F215 | others - machine code |
| 0351807 | others - winding stem |
| DB004BAD1 | others - crown and stem gasket |