The Seiko 4N20-0790 is a watch model based on the 4N20 movement.
Parts List
| 190P01SN03 | crystal |
| 6K40A5SNG0 | crown - crown |
| 0F175BAA1 | case back gasket |
| 0F180BAA1 | case back gasket - case back gasket |
| AC004BAA1 | case back gasket - crown and stem gasket |
| 86173930 | crystal gasket - plastic gasket for crystal |
| DB37B | band - metal band |
| 1CB055A1BNG | others - hour hand |
| 0351155 | others - winding stem |
| 81181459 | others - bracelet fixing pipe |
| 81604259 | others - bracelet fixing pin |
| 81606899 | others - bracelet fixing pin |
| 82833515 | others - case ring |
| 4N200790 | others - case back |
| 4N20079098 | others - case |
| 4N201290XS14 | others - dial |
| 4N2061 | others - machine code |
| 2CB080A1BDG | others - minute hand |