The Seiko 1F21-0E80 is a watch model based on the 1F21 movement.
Parts List
| 160W24SK01 | crystal |
| 30MA2NA1 | crown - crown |
| 0A1500B01 | case back gasket |
| ZZ28A | band - metal band |
| ZZ29A | band - metal band |
| 3BA075F0BNG | others - second hand |
| 1BF045L0BDG | others - hour hand |
| 2BF065L0BDG | others - minute hand |
| 1BC045A0BNG | others - hour hand |
| 81182699 | others - bracelet fixing pipe |
| 82813760 | others - case ring |
| 81609499 | others - bracelet fixing pin |
| 1F210E80 | others - case back |
| 1F210E8075 | others - case |
| 1F210E807N | others - case |
| 1F210H20XS14 | others - dial |
| 1F210H30XG14 | others - dial |
| 1F215 | others - machine code |
| 0351807 | others - winding stem |
| EZ0035B01 | others - crown and stem gasket |
| 2BC065A0BDG | others - minute hand |