The Seiko 4N20-5500 is a watch model based on the 4N20 movement.
Parts List
| EA3S47J20B | crystal - crystal |
| ES3A47J20A | crystal - crystal |
| ES3A47J20B | crystal - crystal |
| 6M30A3NNG4 | crown - crown |
| 6M30A3NNG1 | crown - crown |
| 0H1700B01 | case back gasket - bezel gasket |
| D0K3FZ | band - band |
| D0K3BZ | band - band |
| 1CE025L0BDG | others - hour hand |
| 2CE037L0BDG | others - minute hand |
| 0351155 | others - winding stem |
| DZ0040B01 | others - crown and stem gasket |
| 81190075 | others - bracelet fixing pipe |
| 81604219 | others - bracelet fixing pin |
| 82870910 | others - case ring |
| 4N20550025A | others - case |
| 4N20550025B | others - case |
| 4N205500 | others - case back |
| 4N201820XB14 | others - dial |
| 4N201820XG14 | others - dial |
| 4N2061 | others - machine code |