The Seiko 8J80-5020 is a watch model based on the 8J80 movement.
Parts List
| SA2A61SN01 | crystal - crystal |
| 30M58TH1 | crown - crown |
| 0F240NA1S | case back gasket - case back gasket |
| GI191 | band - band |
| 1BB075A2BHS | others - hour hand |
| 2BB105YBBHS | others - minute hand |
| 0351406 | others - winding stem |
| 8J80502094A | others - case |
| 82837290 | others - case ring |
| EZ0035B01 | others - crown and stem gasket |