The Seiko 4N20-5430 is a watch model based on the 4N20 movement.
Parts List
| ES3A45S2LA | crystal - crystal |
| ES3A45S2LB | crystal - crystal |
| 30MN5NS4 | crown - crown |
| 30MN5NSA | crown - crown |
| 0F180BA1S | case back gasket - case back gasket |
| WB07AW | band - band |
| W028AZ | band - band |
| W030AZ | band - band |
| WB09AW | band - band |
| 2CA067A1BDG | others - minute hand |
| 4N20543061A | others - case |
| 82826570 | others - case ring |
| 4N205430WHA | others - case |
| 4N205430 | others - case back |
| DZ0040B01 | others - crown and stem gasket |
| 0351156 | others - winding stem |
| 4N201670XL14 | others - dial |
| 4N201670XS14 | others - dial |
| 4N201670XS24 | others - dial |
| 4N201680XL14 | others - dial |
| 4N2061 | others - machine code |
| T080AS | others - push pin |
| 2CF070L0BDG | others - minute hand |
| 07Y53DGM | others - minute hand |
| 1CA047A1BNG | others - hour hand |
| 1CF047L0BDG | others - hour hand |
| 07Y53DGH | others - hour hand |