The Seiko Y753-4020 is a watch model based on the Y753 movement.
Parts List
| SA4W00GM01 | crystal |
| EA0090B0A | case back gasket - button gasket |
| FH2781B01 | case back gasket |
| 86563460 | crystal gasket |
| 80613169 | pusher |
| JL70AA | band - leather band |
| A190CS | others - push pin |
| 81350480 | others - button spring |
| 83200101 | others - button spring clip |
Other models with the same movement
| Y753-4000 |
| Y753-4030 |
| Y753-5000 |