The Seiko 1F20-0B70 is a watch model based on the 1F20 movement.
Parts List
| 125W02SV01 | crystal |
| 30M98NA1 | crown |
| 0H1300N01 | case back gasket |
| TT38A | band - metal band |
| 81606439 | others - bracelet fixing pin |
| 81180229 | others - bracelet fixing pipe |
| 82813320 | others - case ring |
| 1F200B70 | others - case back |
| 1F200B70FY | others - case |
| 1F200G40XA14 | others - dial |
| 1F209 | others - machine code |
| 0351807 | others - winding stem |
| 04Y24DGM | others - minute hand |
| 04Y24NGH | others - hour hand |
| DZ0041B01 | others - crown and stem gasket |
Caliber 1F20
