The Seiko 7321-0390 is a watch model based on the 7321 movement.
Parts List
| 230N16SV01 | crystal |
| 230N16SV02 | crystal |
| 25M02NA4 | crown - crown |
| 0A1900N01 | case back gasket - case back gasket |
| DK67B | band - leather band |
| DK68B | band - leather band |
| 07SC06DG | others - second hand |
| 0354735 | others - winding stem |
| 7321039025 | others - case |
| 732103902N | others - case |
| 73211780XN14 | others - dial |
| 73211790XG14 | others - dial |
| 73219 | others - machine code |
| 82800240 | others - case ring |
| A110AS | others - push pin |
| 08T10ZAH | others - hour hand |
| 08T10ZAM | others - minute hand |
| DZ0041B01 | others - crown and stem gasket |