The Seiko 1F21-0F30 is a watch model based on the 1F21 movement.
Parts List
| 185W06SV01 | crystal |
| 35MC2NA1 | crown - crown |
| 0A1800N0A | case back gasket |
| 86580620 | crystal gasket - plastic gasket for crystal |
| RB25A | band - metal band |
| 1BC052A0BAA | others - hour hand |
| 0351807 | others - winding stem |
| 81180229 | others - bracelet fixing pipe |
| 81604259 | others - bracelet fixing pin |
| 82821060 | others - case ring |
| 1F210F30 | others - case back |
| 1F210F3061 | others - case |
| 1F210H80XS14 | others - dial |
| 1F215 | others - machine code |
| EA0040B0A | others - crown and stem gasket |
| 2BC075A0BCA | others - minute hand |
| 3BA080F0BNG | others - second hand |