The Seiko 4N20-0140 is a watch model based on the 4N20 movement.
Parts List
| 230A02JN02 | crystal - crystal |
| 230N21JN01 | crystal - crystal (inorganic) |
| 40M0CNS1 | crown - crown |
| DZ0065B01 | case back gasket - button gasket |
| 0H2400B01 | case back gasket - case back gasket |
| 08Y01DGM | others - minute hand |
| 08Y01NGH | others - hour hand |
| DZ0040B01 | others - crown and stem gasket |
| 0351157 | others - winding stem |
| 4N200140 | others - case back |
| 4N2001402E | others - case |
| 4N200310XS14 | others - dial |
| 4N2061 | others - machine code |
| 81351710 | others - spring |
| 81841013 | others - case bow |
| 82841250 | others - case ring |