The Seiko 7321-0450 is a watch model based on the 7321 movement.
Parts List
| 190N22SN00 | crystal |
| 25M02NA4 | crown - crown |
| 0H1860N01 | case back gasket - case back gasket |
| 3K04A | band - leather band |
| 73210450 | others - case back |
| 732104504G | others - case |
| 73212060XS14 | others - dial |
| 73212070X994 | others - dial |
| 73219 | others - machine code |
| A120AS | others - push pin |
| 07TC4NGH | others - hour hand |
| 0354735 | others - winding stem |
| 82733300 | others - case ring |
| 07TC4NGM | others - minute hand |
| 08SC22D1 | others - second hand |
| DZ0041B01 | others - crown and stem gasket |