The Seiko 3Y09-5020 is a watch model based on the 3Y09 movement.
Parts List
| SAJN15JN01 | crystal |
| 32M75NN1 | crown |
| 0H2000B01 | case back gasket - case back gasket |
| 0H2000B0 | case back gasket |
| Z5332C | band |
| Z5332G | band |
| 06T07DGH | others - hour hand |
| DZ0040B01 | others - crown and stem gasket |
| 0351546 | others - winding stem |
| 07T07AGM | others - minute hand |
| 0515461 | others - winding stem |
| 2BA070A1BAA | others - minute hand |
| 06T07DGM | others - minute hand |
| 1BA045A1BAA | others - hour hand |
| 06T11AGH | others - hour hand |