The Seiko 7N01-1820 is a watch model based on the 7N01 movement.
Parts List
| 240A02LN03 | crystal - crystal |
| 8M35A0NNG2 | crown - crown |
| 8M35A0SNW1 | crown - crown |
| 0H2200B01 | case back gasket - rotating bezel gasket |
| 70G9KB | band - band |
| 70G9JB | band - band |
| 1AB062LCBFK | others - hour hand |
| 2AB095LEBFK | others - minute hand |
| 0351890 | others - winding stem |
| 82819230 | others - case ring |
| V701182029A | others - case |
| V70118202SA | others - case |
| A140BS | others - push pin |
| V7012220XE19 | others - dial |
| V7013 | others - machine code |
| AD006BA12 | others - crown gasket |
| 3BA125F1BF5 | others - second hand |