The Seiko 4N20-0580 is a watch model based on the 4N20 movement.
Parts List
| 160A03SN02 | crystal - crystal |
| 30M57NA1 | crown - crown |
| 0H1500B01 | case back gasket - case back gasket |
| AC004BA11 | case back gasket - crown and stem gasket |
| DZ28B | band - metal band |
| DZ29B | band - metal band |
| 05Y49DGM | others - minute hand |
| 0351155 | others - winding stem |
| 81182699 | others - bracelet fixing pipe |
| 81609399 | others - bracelet fixing pin |
| 81609559 | others - bracelet fixing pin |
| 82833415 | others - case ring |
| 4N200580 | others - case back |
| 4N2005802N | others - case |
| 4N200580FY | others - case |
| 4N201020XA15 | others - dial |
| 4N201030XG14 | others - dial |
| 4N2061 | others - machine code |
| 05Y49NGH | others - hour hand |
| 06Y69NGH | others - hour hand |
| 06Y69NGM | others - minute hand |