The Seiko 1F20-5H4A is a watch model based on the 1F20 movement.
Parts List
| REDN32JN01 | crystal |
| 30M62NA3 | crown |
| 0E210NA1S | case back gasket - rotating bezel gasket |
| MK40G | band - band |
| MK41G | band - leather band |
| MK42G | band - leather band |
| A120AS | others - push pin |
| 1F205H4ACH | others - case |
| 82823520 | others - case ring |
| 1F205H4A | others - case back |
| 0351807 | others - winding stem |
| 1CC045A2BNG | others - hour hand |
| 2CC065A0BNG | others - minute hand |
| DZ0041B01 | others - crown and stem gasket |
Caliber 1F20
