The Seiko 1F20-0C20 is a watch model based on the 1F20 movement.
Parts List
| 135N06JN01 | crystal |
| 135N06JN | crystal |
| 30M98NA1 | crown |
| 0H1300B01 | case back gasket |
| 0H1300B0 | case back gasket |
| 81932041 | clasp - clasp |
| 82813320 | others - case ring |
| 1F200C20 | others - case back |
| 1F200C2025 | others - case |
| 1F200K90XS14 | others - dial |
| 1F209 | others - machine code |
| 0351807 | others - winding stem |
| 2CC055A0BAA | others - minute hand |
| DZ0041B01 | others - crown and stem gasket |
| 05Y15AGM | others - minute hand |
| 05Y15AGH | others - hour hand |
Caliber 1F20
