The Seiko 1F21-0H80 is a watch model based on the 1F21 movement.
Parts List
| 180WA2SK02 | crystal |
| 35M2NNA1 | crown |
| 35M2NNS1 | crown |
| 0F170NA1S | case back gasket - case back gasket |
| MK29G | band - leather band |
| MK30G | band - leather band |
| 0351807 | others - winding stem |
| 1BD050A0BAA | others - hour hand |
| 82822980 | others - case ring |
| 1F210H80 | others - case back |
| 1F210H8076 | others - case |
| 1F210H8087 | others - case |
| 1F211C30XS14 | others - dial |
| 1F211C30XS23 | others - dial |
| 1F215 | others - machine code |
| A110AS | others - push pin |
| 1BD050A0BAD | others - hour hand |
| EZ0035B01 | others - crown and stem gasket |
| 2BD075A0BCA | others - minute hand |
| 2BD075A0BCD | others - minute hand |
| 3AA085F0ANG | others - second hand |
| 3AA085F0ANS | others - second hand |