The Seiko 1F21-0D80 is a watch model based on the 1F21 movement.
Parts List
| 170W08SN02 | crystal |
| 32M10NA1 | crown - crown |
| 0A1700B01 | case back gasket |
| DA50A | band - metal band |
| 3BA075F0BNG | others - second hand |
| 0351807 | others - winding stem |
| 1BH050A0BNG | others - hour hand |
| 81180229 | others - bracelet fixing pipe |
| 81611459 | others - bracelet fixing pin |
| 82822840 | others - case ring |
| 1F210D80 | others - case back |
| 1F210D80T8 | others - case |
| 1F210F70XS14 | others - dial |
| 1F215 | others - machine code |
| EZ0035B01 | others - crown and stem gasket |
| 2BH070A0BNG | others - minute hand |