The Seiko 1F21-0G7B is a watch model based on the 1F21 movement.
Parts List
| 180P04SN02 | crystal |
| 35M1SNA4 | crown |
| 0A1800N0A | case back gasket |
| 86570780 | crystal gasket |
| MK68F | band - leather band |
| 3BA075F0BNG | others - second hand |
| A120BS | others - push pin (for lb) |
| 1F210G7B | others - case back |
| 1F210G7B6Y | others - case |
| 1F210K90XG14 | others - dial |
| 1F215 | others - machine code |
| 84323361 | others - dial ring |
| 89912489 | others - pin |
| 82820520 | others - case ring |
| 0351807 | others - winding stem |
| 1BH045L0BDG | others - hour hand |
| 2BH065L0BDG | others - minute hand |
| EA0040B0A | others - crown and stem gasket |