The Seiko 1F20-6D30 is a watch model based on the 1F20 movement.
Parts List
| ESMN04JH03 | crystal |
| ESMN04JH04 | crystal - crystal |
| 30M98NA1 | crown |
| 0E160NA1S | case back gasket - case back gasket |
| D0K0AB | band - band |
| D0K0BB | band - band |
| 1CA030AMBNG | others - small hand (6h) |
| 2CA045AMBNG | others - minute hand |
| 81182699 | others - bracelet fixing pipe |
| 81609399 | others - bracelet fixing pin |
| 1F206D3025 | others - case |
| 82837100 | others - case ring |
| 1F206D30 | others - case back |
| 1F206D3029 | others - case |
| 1F202M00XB14 | others - dial |
| 1F202M00XL14 | others - dial |
| 1F205 | others - machine code |
| 0351807 | others - winding stem |
| DZ0041B01 | others - crown and stem gasket |
Caliber 1F20
