The Seiko 4J80-0A20 is a watch model based on the 4J80 movement.
Parts List
| 190A02SN01 | crystal - crystal |
| 6M25A2ZTWA | crown - crown |
| 0F180NA1S | case back gasket - case back gasket |
| AB54AW | band - band |
| 1BA040A1BJS | others - hour hand |
| 2BA060A1BJS | others - minute hand |
| 82835740 | others - case ring |
| 4J800A2094 | others - case |
| A110AS | others - push pin |
| 0351405 | others - winding stem |
| EZ0035B01 | others - crown and stem gasket |