The Seiko 4N20-028A is a watch model based on the 4N20 movement.
Parts List
| 170A05SR0A | crystal - crystal |
| 30M71NA4 | crown |
| 0F150BAA5 | case back gasket - case back gasket |
| HK59C | band - band |
| 4N20028A5WA | others - case |
| 82361135 | others - bezel |
| 4N20028A | others - case back |
| 4N200990XS14 | others - dial |
| 4N2061 | others - machine code |
| A120AS | others - push pin |
| DZ0040B01 | others - crown and stem gasket |
| 07Y15VGM | others - minute hand |
| 82841070 | others - case ring |
| 07Y69VCH | others - hour hand |