The Seiko 7N21-8A20 is a watch model based on the 7N21 movement.
Parts List
| 295W36JN01 | crystal - crystal |
| 8M35A0NNG1 | crown - crown |
| 0F270NA1S | case back gasket - case back gasket |
| WJ37BW | band - band |
| WJ38BW | band - band |
| 3AA125F0ANG | others - second hand |
| 1AE080L0BNG | others - hour hand |
| 2AE120L0BNG | others - minute hand |
| 0351892 | others - winding stem |
| 82824800 | others - case ring |
| 7N228A2075 | others - case |
| 7N228A20 | others - case back |
| 0878579 | others - date dial |
| 7N220 | others - machine code |
| 7N228B70XB14 | others - dial |
| 7N228B70XG14 | others - dial |
| A180BS | others - push pin |
| AD006BA12 | others - crown gasket |
Other models with the same movement