The Seiko 4N20-0680 is a watch model based on the 4N20 movement.
Parts List
| 150A11J20A | crystal |
| 6M40Z1SNGA | crown |
| 0F140BAA3 | case back gasket - case back gasket |
| HZ25B | band - metal band |
| 81606439 | others - bracelet fixing pin |
| 81181459 | others - bracelet fixing pipe |
| 81607039 | others - bracelet fixing pin |
| 82840910 | others - case ring |
| 4N200680 | others - case back |
| 4N2006807EA | others - case |
| 4N201150XS24 | others - dial |
| 4N2061 | others - machine code |
| DZ0040B01 | others - crown and stem gasket |
| 0351155 | others - winding stem |
| 05Y47ARH | others - hour hand |
| 06Y03NGM | others - minute hand |