The Seiko 1F20-0H30 is a watch model based on the 1F20 movement.
Parts List
| 215N08JN01 | crystal |
| 30M62NA3 | crown |
| 0H2100B01 | case back gasket |
| 0H2100B0 | case back gasket |
| BJA60G | band |
| WA12BB | band - band |
| BJJ75G | band |
| 2CA090A0BNG | others - minute hand |
| 1CA060A0BNG | others - hour hand |
| A130AS | others - push pin (for lb) |
| 1F200H30CH | others - case |
| 1F202A80XG14 | others - dial |
| 1F202A80XS14 | others - dial |
| 1F202A90XS19 | others - dial |
| 1F202H40XG14 | others - dial |
| 1F205 | others - machine code |
| 1F200H30CHA | others - case |
| 82823800 | others - case ring |
| 1F200H30 | others - case back |
| 0351807 | others - winding stem |
| DZ0041B01 | others - crown and stem gasket |
| 2CD090A0BAA | others - minute hand |
| 09Y10AGM | others - minute hand |
| 1CD060A0BAA | others - hour hand |
Caliber 1F20
