The Seiko 8J81-6A20 is a watch model based on the 8J81 movement.
Parts List
| 260P08SV0C | crystal - crystal |
| 260P08SV0D | crystal |
| 260WA0SN01 | crystal |
| 40MF0NH2 | crown - crown |
| 40MF0NE2 | crown - crown |
| 40MF0NS2 | crown - crown |
| 0F250NAAS | case back gasket - case back gasket |
| 86582040 | crystal gasket - plastic gasket for crystal |
| GB45B | band - band |
| A011CZ | band - band |
| GB46B | band - band |
| 1BB070Y0BHS | others - hour hand |
| 1BB070Y0BHG | others - hour hand |
| 2BB107Y0BHG | others - minute hand |
| 10ST10JG | others - second hand |
| 2BB107Y0BHS | others - minute hand |
| 10ST10JS | others - second hand |
| 1BB070Y0BES | others - hour hand |
| 2BB107Y0BES | others - minute hand |
| 81190055 | others - bracelet fixing pipe |
| 0351406 | others - winding stem |
| 81611149 | others - bracelet fixing pin |
| 82835680 | others - case ring |
| 8J816A208N | others - case |
| 8J816A20 | others - case back |
| 8J816A209G | others - case |
| 8J816A209V | others - case |
| EA0040B0A | others - crown and stem gasket |