The Seiko Y143-5120 is a watch model based on the Y143 movement.
Parts List
| ESEN72LN01 | crystal |
| 35MB2NF1 | crown |
| 0H2650B01 | case back gasket |
| 022LD | band - leather band |
| 036MD | band - metal band |
| 010ML | band - metal band |
| A190BS | others - push pin |
| 0354866 | others - winding stem |
| EZ0058B01 | others - crown and stem gasket |
| ESEN72LN01 | crystal |
| 35MB2NF1 | crown |
| 0H2650B01 | case back gasket |
| 022LD | band - leather band |
| 036MD | band - metal band |
| 010ML | band - metal band |
| A190BS | others - push pin |
| 0354866 | others - winding stem |
| EZ0058B01 | others - crown and stem gasket |