The Seiko 1F20-0A40 is a watch model based on the 1F20 movement.
Parts List
| 145N06JK01 | crystal |
| 30M98NS1 | crown - crown |
| 0H1400B01 | case back gasket - case back gasket |
| 81931169 | clasp - clasp |
| 05Y17ADH | others - hour hand |
| 0351807 | others - winding stem |
| 82813280 | others - case ring |
| 1F200A40 | others - case back |
| 1F200A4011 | others - case |
| 1F200D40XS29 | others - dial |
| 1F209 | others - machine code |
| 05Y17ADM | others - minute hand |
| DZ0041B01 | others - crown and stem gasket |
Caliber 1F20
