The Seiko 8J81-6B20 is a watch model based on the 8J81 movement.
Parts List
| 245A02SN01 | crystal - crystal |
| 25M65DXA | crown - crown |
| 0F250BAD2 | case back gasket - case back gasket |
| VI418 | band - band |
| 1BB075A2BHS | others - hour hand |
| 2BB105YBBHS | others - minute hand |
| 10ST12JS | others - second hand |
| 0351406 | others - winding stem |
| 82837440 | others - case ring |
| 8J816B206E | others - case |
| DZ0040B01 | others - crown and stem gasket |