The Seiko Y486-5020 is a watch model based on the Y486 movement.
Parts List
| BA1W11LM10 | crystal |
| BA1W11LM40 | crystal |
| BA1W11LM50 | crystal |
| FH2981B0A | case back gasket |
| EA0090B0A | case back gasket - button gasket |
Other models with the same movement
| Y486-4000 |
| Y486-4020 |
| Y486-4030 |
| Y486-4040 |
| Y486-4060 |
| Y486-4090 |
| Y486-409A |
| Y486-4100 |
| Y486-5010 |
| Y486-5030 |