The Seiko 1F21-0J50 is a watch model based on the 1F21 movement.
Parts List
| 150A06SV0C | crystal - crystal |
| 30MA2NA1 | crown - crown |
| 0F140NA1S | case back gasket - case back gasket |
| D022CQ | band - band |
| 1BC040A1BNG | others - hour hand |
| 2BC060A1BNG | others - minute hand |
| 81606439 | others - bracelet fixing pin |
| 81180229 | others - bracelet fixing pipe |
| 82813280 | others - case ring |
| 1F210J507E | others - case |
| 1F210J50 | others - case back |
| 1F211D00XS19 | others - dial |
| 1F215 | others - machine code |
| 0351807 | others - winding stem |
| EZ0035B01 | others - crown and stem gasket |
| 3BA080F0BNG | others - second hand |