The Seiko 8J81-6A21 is a watch model based on the 8J81 movement.
Parts List
| 0F250BAD2 | case back gasket - case back gasket |
| GB46B | band - band |
| GB45B | band - band |
| 81190055 | others - bracelet fixing pipe |
| 81611149 | others - bracelet fixing pin |
| EA0040B0A | others - crown and stem gasket |