The Seiko 1F20-5G39 is a watch model based on the 1F20 movement.
Parts List
| K00W98JN01 | crystal |
| K00W98JN | crystal |
| 30M36NA3 | crown - crown |
| 0H1300B01 | case back gasket |
| 0H1300B0 | case back gasket |
| B5608G | band |
| B5609G | band |
| B5608G-BK3G | clasp - clasp |
| B5609G-BK3G | clasp - clasp |
| B5609G-EP2 | others - endpiece |
| B5608G-EP2 | others - endpiece |
| 0351807 | others - winding stem |
| 1F201E00XG14 | others - dial |
| 1F201E10XB14 | others - dial |
| 1F205G39 | others - case back |
| 1F205G392N | others - case |
| 1F209 | others - machine code |
| 82812880 | others - case ring |
| 03Y06DGM | others - minute hand |
| DZ0041B01 | others - crown and stem gasket |
| 03Y06DGH | others - hour hand |
Caliber 1F20
