The Seiko 1F20-5D10 is a watch model based on the 1F20 movement.
Parts List
| REDN06JM01 | crystal |
| REDN06JM | crystal |
| 30M98NA1 | crown |
| 0H1500B01 | case back gasket - case back gasket |
| 0H1500B0 | case back gasket |
| Z5351J-LKS | band - link |
| Z5351S | band |
| Z5351S-LKS | band - link |
| Z5351J | band |
| Z5351S-BK4S | clasp - clasp |
| Z5351J-BK4S | clasp - clasp |
| 0351807 | others - winding stem |
| 82814280 | others - case ring |
| 1F200D88XS24 | others - dial |
| 1F200D98XS19 | others - dial |
| 1F200J80XG24 | others - dial |
| 1F205D10 | others - case back |
| 1F205D1029 | others - case |
| 1F205D1029Z | others - case |
| 1F209 | others - machine code |
| A100AS | others - push pin |
| DZ0041B01 | others - crown and stem gasket |
| 04Y08NGM | others - minute hand |
| 04Y08FGM | others - minute hand |
| 04Y08NGH | others - small hand (6h) |
| 04Y06FGH | others - hour hand |
Caliber 1F20
