The Seiko 1F21-0H40 is a watch model based on the 1F21 movement.
Parts List
| 145W06SK01 | crystal |
| 25M18EE1 | crown - crown |
| 0F130NA1S | case back gasket - case back gasket |
| 81180581 | band - bracelet fixing pipe |
| 81503021 | others - screw |
| 81503589 | others - screw |
| 86503985 | others - decorative plate |
| 0351807 | others - winding stem |
| 05T42DGH | others - hour hand |
| EZ0035B0D | others - crown and stem gasket |
| 81604321 | others - bracelet fixing pin |
| 82821000 | others - case ring |
| 1F210H40 | others - case back |
| 1F210H409T | others - case |
| 1F211B50X914 | others - dial |
| 1F219 | others - machine code |
| 05T42DGM | others - minute hand |
| 06SC21VG | others - second hand |