The Seiko 1F20-5040 is a watch model based on the 1F20 movement.
Parts List
| ES1A69SN02 | crystal |
| 30MB0NA1 | crown - crown |
| 0H1400B01 | case back gasket - case back gasket |
| TT65A | band - metal band |
| 1CC035AABNG | others - hour hand |
| 0351807 | others - winding stem |
| 04Y31NGH | others - hour hand |
| 81182699 | others - bracelet fixing pipe |
| 81609399 | others - bracelet fixing pin |
| 81609459 | others - bracelet fixing pin |
| 1F200170XS19 | others - dial |
| 1F205 | others - machine code |
| 1F205040 | others - case back |
| 1F20504025 | others - case |
| 82853450 | others - case ring |
| 04Y31NGM | others - minute hand |
| DZ0041B01 | others - crown and stem gasket |
| 2CC047AABNG | others - minute hand |
Caliber 1F20
