The Seiko 1F20-5D70 is a watch model based on the 1F20 movement.
Parts List
| REDN10JC01 | crystal |
| REDN10JC | crystal |
| 30M98NA1 | crown |
| 0H1500B01 | case back gasket - case back gasket |
| 0H1500B0 | case back gasket |
| Z5351G | band |
| Z5351G-LKG | band - link |
| Z5351G-BK4G | clasp - clasp |
| 82814280 | others - case ring |
| 1F200J90XB14 | others - dial |
| 1F200J90XG14 | others - dial |
| 1F205D70 | others - case back |
| 1F205D7025 | others - case |
| 1F209 | others - machine code |
| A100AS | others - push pin |
| 0351807 | others - winding stem |
| DZ0041B01 | others - crown and stem gasket |
| 04Y14DGM | others - minute hand |
| 1CE030L4BDG | others - hour hand |
| 04Y12DGH | others - hour hand |
Caliber 1F20
