The Seiko 4N20-0660 is a watch model based on the 4N20 movement.
Parts List
| 150A11JN02 | crystal |
| 6M40Z1SNWA | crown |
| 0F140BAA3 | case back gasket - case back gasket |
| 81931673 | clasp - clasp |
| DZ0040B01 | others - crown and stem gasket |
| 0351155 | others - winding stem |
| 05Y47ALH | others - hour hand |
| 82840910 | others - case ring |
| 4N200660 | others - case back |
| 4N2006607EA | others - case |
| 4N201160XL13 | others - dial |
| 4N2061 | others - machine code |
| 06Y03NSM | others - minute hand |