The Seiko 7321-5620 is a watch model based on the 7321 movement.
Parts List
| RE7N40GN00 | crystal - crystal |
| 30M68NA1 | crown - crown |
| 0H2001N01 | case back gasket |
| DL55A | band - band |
| 07SC02NG | others - second hand |
| 81606439 | others - bracelet fixing pin |
| 81180229 | others - bracelet fixing pipe |
| 0354735 | others - winding stem |
| 73215620EF | others - case |
| 82731900 | others - case ring |
| 73211080X994 | others - dial |
| 73219 | others - machine code |
| 81880181 | others - case bow |
| A140AS | others - push pin |
| DZ0041B01 | others - crown and stem gasket |
| 06T04NGM | others - minute hand |
| 07T04NGH | others - hour hand |