The Seiko 1F21-0F50 is a watch model based on the 1F21 movement.
Parts List
| 170W02SN01 | crystal |
| 6K30A0SNG2 | crown - crown |
| 0A1700N01 | case back gasket - case back gasket |
| 86572840 | crystal gasket |
| DA56A | band - metal band |
| 3BA075F0BNG | others - second hand |
| 0351807 | others - winding stem |
| 1BB045A0BNG | others - hour hand |
| 82822840 | others - case ring |
| 1F210F50 | others - case back |
| 1F210F507L | others - case |
| 1F210J10XS14 | others - dial |
| 1F210J21XS14 | others - dial |
| 1F215 | others - machine code |
| A100AS | others - push pin |
| 2BB070A0BNG | others - minute hand |
| EZ0035B01 | others - crown and stem gasket |