The Seiko 1F21-0A30 is a watch model based on the 1F21 movement.
Parts List
| 155N50JN01 | crystal |
| 30M98NA1 | crown |
| 0H1500B01 | case back gasket - case back gasket |
| HZ45A | band - metal band |
| HZ46A | band - metal band |
| HZ46A-BK | clasp - clasp |
| 07SC02NG | others - second hand |
| 06T38FGH | others - hour hand |
| 06T38FGM | others - minute hand |
| 0351807 | others - winding stem |
| 81180229 | others - bracelet fixing pipe |
| 82813760 | others - case ring |
| 81604729 | others - bracelet fixing pin |
| 1F210A30 | others - case back |
| 1F210A3025 | others - case |
| 1F210A302N | others - case |
| 1F210A90XG14 | others - dial |
| 1F210B00XS19 | others - dial |
| 1F219 | others - machine code |
| DZ0041B01 | others - crown and stem gasket |
| 06T44NAH | others - hour hand |
| 06T44NAM | others - minute hand |