The Seiko 1F20-0D1A is a watch model based on the 1F20 movement.
Parts List
| 145W08SK01 | crystal |
| 38M18NA1 | crown |
| 0A1500B0A | case back gasket |
| 86581300 | crystal gasket |
| ZB21A | band - metal band |
| 05Y17DGM | others - minute hand |
| 0351807 | others - winding stem |
| 81606439 | others - bracelet fixing pin |
| 81180229 | others - bracelet fixing pipe |
| 1F200D1A | others - case back |
| 1F200D1ASA | others - case |
| 1F201D10XS14 | others - dial |
| 1F209 | others - machine code |
| 82820240 | others - case ring |
| 05Y17NGH | others - hour hand |
| EA0040B0A | others - crown and stem gasket |
Caliber 1F20
